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                                                                  EXHIBIT 10.11

                     CHANGE-OF-CONTROL EMPLOYMENT AGREEMENT



         AGREEMENT by and between Smith International, Inc., a Delaware
corporation (the "Company") and DOUGLAS L. ROCK (the "Executive"), dated as of
the 4th day of January, 2000.

         The Board of Directors of the Company (the "Board"), has determined
that it is in the best interests of the Company and its shareholders to assure
that the Company will have the continued dedication of the Executive,
notwithstanding the possibility, threat or occurrence of a Change of Control
(as defined below) of the Company. The Board believes it is imperative to
diminish the inevitable distraction of the Executive by virtue of the personal
uncertainties and risks created by a pending or threatened Change of Control
and to encourage the Executive's full attention and dedication to the Company
currently and in the event of any threatened or pending Change of Control, and
to provide the Executive with compensation and benefits arrangements upon a
Change of Control which ensure that the compensation and benefits expectations
of the Executive will be satisfied and which are competitive with those of
other corporations. Therefore, in order to accomplish these objectives, the
Board has caused the Company to enter into this Agreement.

         NOW, THEREFORE, IT IS HEREBY AGREED AS FOLLOWS:

         1. Other Agreements. The Company and the Executive are parties to: (i)
An Employment Agreement dated as of December 10, 1987 (the "Employment
Agreement"); (ii) an Amendment to Employment Agreement dated as of October 16,
1989 (the "Amendment") and (ii) a First Amendment to the Amendment to the
Employment Agreement dated as of November 12, 1992 (the "First Amendment").
Upon full execution and delivery of this Agreement, the parties agree that the
Amendment and the First Amendment shall be cancelled and of no force and effect
as of January 4, 2000. The terms of the Employment Agreement, as written,
without giving effect to the Amendment or the First Amendment, shall remain in
force and effect;





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provided that in the event of a Change of Control, the terms of this Agreement
shall control, except with respect to any Accrued Obligations, as defined
herein.

         2. Certain Definitions. (a) The "Effective Date", shall mean the first
date during the Change of Control Period (as defined in Section 2 (b)) on which
a Change of Control (as defined in Section 2) occurs. Anything in this
Agreement to the contrary notwithstanding, if a Change of Control occurs and if
the Executive's employment with the Company is terminated prior to the date on
which the Change of Control occurs, and if it is reasonably demonstrated by the
Executive that such termination of employment (i) was at the request of a third
party who has taken steps reasonably calculated to effect a Change of Control
or (ii) otherwise arose in connection with or anticipation of a Change of
Control, then for all purposes of this Agreement the "Effective Date" shall
mean the date immediately prior to the date of such termination of employment.

         (b) The "Change of Control Period" shall mean the period commencing on
the date hereof and ending on the third anniversary of the date hereof;
provided, however, that commencing on the date one year after the date hereof,
and on each annual anniversary of such date (such date and each annual
anniversary thereof shall be hereinafter referred to as the "Renewal Date"),
unless previously terminated, the Change of Control Period shall be
automatically extended so as to terminate three years from such Renewal Date,
unless at least 60 days prior to the Renewal Date the Company shall give notice
to the Executive that the Change of Control Period shall not be so extended.

         3. Change of Control. For the purpose of this Agreement, a "Change of
Control" shall mean:

         (a) The acquisition by any individual, entity or group (within the
meaning of Section 13(d)(3) or 14(d)(2) of the Securities Exchange Act of 1934,
as amended (the "Exchange Act")) (a "Person") of beneficial ownership (within
the meaning of Rule 13d-3 promulgated under the Exchange Act) of 20% or more of
either (i) the then outstanding shares of common stock of the Company (the
"Outstanding Company Common Stock") or (ii) the combined voting power of the




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then outstanding voting securities of the Company entitled to vote generally in
the election of directors (the "Outstanding Company Voting Securities");
provided, however, that for purposes of this subsection (a), the following
acquisitions shall not constitute a Change of Control: (i) any acquisition
directly from the Company, (ii) any acquisition by the Company, (iii) any
acquisition by any employee benefit plan (or related trust) sponsored or
maintained by the Company or any corporation controlled by the Company or (iv)
any acquisition by any corporation pursuant to a transaction which complies
with clauses (i), (ii) and (iii) of subsection (c) of this Section 3; or

         (b) Individuals who, as of the date hereof, constitute the Board (the
"Incumbent Board") cease for any reason to constitute at least a majority of
the Board; provided, however, that any individual becoming a director
subsequent to the date hereof whose election, or nomination for election by the
Company's shareholders, was approved by a vote of at least a majority of the
directors then comprising the Incumbent Board shall be considered as though
such individual were a member of the Incumbent Board, but excluding, for this
purpose, any such individual whose initial assumption of office occurs as a
result of an actual or threatened election contest with respect to the election
or removal of directors or other actual or threatened solicitation of proxies
or consents by or on behalf of a Person other than the Board; or

         (c) Consummation of a reorganization, merger or consolidation or sale
or other disposition of all or substantially all of the assets of the Company
(a "Business Combination"), in each case, unless, following such Business
Combination, (i) all or substantially all of the individuals and entities who
were the beneficial owners, respectively, of the Outstanding Company Common
Stock and Outstanding Company Voting Securities immediately prior to such
Business Combination beneficially own, directly or indirectly, more than 60%
of, respectively, the then outstanding shares of common stock and the combined
voting power of the then outstanding voting securities entitled to vote
generally in the election of directors, as the case may be, of the corporation
resulting from such Business Combination (including, without limitation, a
corporation which as a result of such transaction owns the Company or all or
substantially all of the Company's assets either directly or through one or
more subsidiaries) in substantially the same proportions as their ownership,
immediately prior to such Business



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Combination of the Outstanding Company Common Stock and Outstanding Company
Voting Securities, as the case may be, (ii) no Person (excluding any
corporation resulting from such Business Combination or any employee benefit
plan (or related trust) of the Company or such corporation resulting from such
Business Combination) beneficially owns, directly or indirectly, 20% or more
of, respectively, the then outstanding shares of common stock of the
corporation resulting from such Business Combination or the combined voting
power of the then outstanding voting securities of such corporation except to
the extent that such ownership existed prior to the Business Combination and
(iii) at least a majority of the members of the board of directors of the
corporation resulting from such Business Combination were members of the
Incumbent Board at the time of the execution of the initial agreement, or of
the action of the Board, providing for such Business Combination; or

         (d) Approval by the shareholders of the Company of a complete
liquidation or dissolution of the Company.

         4. Employment Period. The Company hereby agrees to continue the
Executive in its employ, and the Executive hereby agrees to remain in the
employ of the Company subject to the terms and conditions of this Agreement,
for the period commencing on the Effective Date and ending on the third
anniversary of such date (the "Employment Period").

         5. Terms of Employment. (a) Position and Duties. (i) During the
Employment Period, (A) the Executive's position (including status, offices,
titles and reporting requirements), authority, duties and responsibilities
shall be at least commensurate in all material respects with the most
significant of those held, exercised and assigned at any time during the
120-day period immediately preceding the Effective Date and (B) the Executive's
services shall be performed at the location where the Executive was employed
immediately preceding the Effective Date or any office or location less than 35
miles from such location.

         (ii) During the Employment Period, and excluding any periods of
vacation and sick leave to which the Executive is entitled, the Executive
agrees to devote reasonable attention and



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time during normal business hours to the business and affairs of the Company
and, to the extent necessary to discharge the responsibilities assigned to the
Executive hereunder, to use the Executive's reasonable best efforts to perform
faithfully and efficiently such responsibilities. During the Employment Period
it shall not be a violation of this Agreement for the Executive to (A) serve on
corporate, civic or charitable boards or committees, (B) deliver lectures,
fulfill speaking engagements or teach at educational institutions and (C)
manage personal investments, so long as such activities do not significantly
interfere with the performance of the Executive's responsibilities as an
employee of the Company in accordance with this Agreement. It is expressly
understood and agreed that to the extent that any such activities have been
conducted by the Executive prior to the Effective Date, the continued conduct
of such activities (or the conduct of activities similar in nature and scope
thereto) subsequent to the Effective Date shall not thereafter be deemed to
interfere with the performance of the Executive's responsibilities to the
Company.

         (b) Compensation. (i) Base Salary. During the Employment Period, the
Executive shall receive an annual base salary ("Annual Base Salary"), which
shall be paid at a monthly rate, at least equal to twelve times the highest
monthly base salary paid or payable, including any base salary which has been
earned but deferred, to the Executive by the Company and its affiliated
companies in respect of the twelve-month period immediately preceding the month
in which the Effective Date occurs. During the Employment Period, the Annual
Base Salary shall be reviewed no more than 12 months after the last salary
increase awarded to the Executive prior to the Effective Date and thereafter at
least annually. Any increase in Annual Base Salary shall not serve to limit or
reduce any other obligation to the Executive under this Agreement. Annual Base
Salary shall not be reduced after any such increase and the term Annual Base
Salary as utilized in this Agreement shall refer to Annual Base Salary as so
increased. As used in this Agreement, the term "affiliated companies" shall
include any company controlled by, controlling or under common control with the
Company.

         (ii) Annual Bonus. In addition to Annual Base Salary, the Executive
shall be awarded, for each fiscal year ending during the Employment Period, an
annual bonus (the





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"Annual Bonus") in cash (i) under the Company's Annual Incentive Plan based
upon meeting the targets in the Annual Incentive Plan, provided that the
Executive's target bonus percentage shall be at least equal to the Executive's
target bonus percentage for the fiscal year prior to the Effective Date or
equal to an increase in the target bonus percentage given to any similarly
situated executive after the Effective Date, or, if higher, (ii) under any
annual incentive plan or discretionary award by the Company to similarly
situated executives which is enacted or approved after the Effective Date. Each
such Annual Bonus shall be paid no later than the end of the third month of the
fiscal year next following the fiscal year for which the Annual Bonus is
awarded, unless the Executive shall elect to defer the receipt of such Annual
Bonus.

         (iii) Incentive, Savings and Retirement Plans. During the Employment
Period, the Executive shall be entitled to participate in all incentive,
savings and retirement plans, practices, policies and programs applicable
generally to other peer executives of the Company and its affiliated companies,
but in no event shall such plans, practices, policies and programs provide the
Executive with incentive opportunities (measured with respect to both regular
and special incentive opportunities, to the extent, it any, that such
distinction is applicable), savings opportunities and retirement benefit
opportunities, in each case, less favorable, in the aggregate, than the most
favorable of those provided by the Company and its affiliated companies for the
Executive under such plans, practices, policies and programs as in effect at
any time during the 120-day period immediately preceding the Effective Date or
if more favorable to the Executive, those provided generally at any time after
the Effective Date to other peer executives of the Company and its affiliated
companies.

         (iv) Welfare Benefit Plans. During the Employment Period, the
Executive and/or the Executive's-family, as the case may be, shall be eligible
for participation in and shall receive all benefits under welfare benefit
plans, practices, policies and programs provided by the Company and its
affiliated companies (including, without limitation, medical, prescription,
dental, disability, employee life, group life, accidental death and travel
accident insurance plans and programs) to the extent applicable generally to
other peer executives of the Company and its affiliated companies, but in no
event shall such plans, practices, policies and programs provide





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the Executive with benefits which are less favorable, in the aggregate, than
the most favorable of such plans, practices, policies and programs in effect
for the Executive at any time during the 120-day period immediately preceding
the Effective Date or, if more favorable to the Executive, those provided
generally at any time after the Effective Date to other peer executives of the
Company and its affiliated companies.

         (v) Expenses. During the Employment Period, the Executive shall be
entitled to receive prompt reimbursement for all reasonable expenses incurred
by the Executive in accordance with the most favorable policies, practices and
procedures of the Company and its affiliated companies in effect for the
Executive at any time during the 120-day period immediately preceding the
Effective Date or, if more favorable to the Executive, as in effect generally
at any time thereafter with respect to other peer executives of the Company and
its affiliated companies.

         (vi) Fringe Benefits. During the Employment Period, the Executive
shall be entitled to fringe benefits, including, without limitation, tax and
financial planning services, payment of club dues, and, if applicable, use of
an automobile and payment of related expenses, in accordance with the most
favorable plans, practices, programs and policies of the Company and its
affiliated companies in effect for the Executive at any time during the 120-day
period immediately preceding the Effective Date or, if more favorable to the
Executive, as in effect generally at any time thereafter with respect to other
peer executives of the Company and its affiliated companies.

         (vii) Office and Support Staff. During the Employment Period, the
Executive shall be entitled to an office or offices of a size and with
furnishings and other appointments, and to exclusive personal secretarial and
other assistance, at least equal to the most favorable of the foregoing
provided to the Executive by the Company and its affiliated companies at any
time during the 120-day period immediately preceding the Effective Date or, if
more favorable to the Executive, as provided generally at any time thereafter
with respect to other peer executives of the Company and its affiliated
companies.




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         (viii) Vacation. During the Employment Period, the Executive shall be
entitled to paid vacation in accordance with the most favorable plans,
policies, programs and practices of the Company and its affiliated companies as
in effect for the Executive at any time during the 120-day period immediately
preceding the Effective Date or, if more favorable to the Executive, as in
effect generally at any time thereafter with respect to other peer executives
of the Company and its affiliated companies.

         6. Termination of Employment. (a) Death or Disability. The Executive's
employment shall terminate automatically upon the Executive's death during the
Employment Period. If the Company determines in good faith that the Disability
of the Executive has occurred during the Employment Period (pursuant to the
definition of Disability set forth below), it may give to the Executive written
notice in accordance with Section 13(b) of this Agreement of its intention to
terminate the Executive's employment. In such event, the Executive's employment
with the Company shall terminate effective on the 30th day after receipt of
such notice by the Executive (the "Disability Effective Date"), provided that,
within the 30 days after such receipt, the Executive shall not have returned to
full-time performance of the Executive's duties. For purposes of this
Agreement, "Disability" shall mean the absence of the Executive from the
Executive's duties with the Company on a full-time basis for 180 consecutive
business days as a result of incapacity due to mental or physical illness which
is determined to be total and permanent by a physician selected by the Company
or its insurers and acceptable to the Executive or the Executive's legal
representative.

         (b) Cause. The Company may terminate the Executive's employment during
the Employment Period for Cause. For purposes of this Agreement, "Cause" shall
mean:

         (i) the willful and continued failure of the Executive to perform
         substantially the Executive's duties with the Company or one of its
         affiliates (other than any such failure resulting from incapacity due
         to physical or mental illness), after a written demand for substantial
         performance is delivered to the Executive by the Board or the Chief
         Executive




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         Officer of the Company which specifically identifies the manner in
         which the Board or Chief Executive Officer believes that the Executive
         has not substantially performed the Executive's duties, or

         (ii) the willful engaging by the Executive in illegal conduct or gross
         misconduct which is materially and demonstrably injurious to the
         Company.

         For purposes of this provision, no act or failure to act, on the part
of the Executive, shall be considered "willful" unless it is done, or omitted
to be done, by the Executive in bad faith or without reasonable belief that the
Executive's action or omission was in the best interests of the Company. Any
act, or failure to act, based upon authority given pursuant to a resolution
duly adopted by the Board or upon the instructions of the Chief Executive
Officer or a senior officer of the Company or based upon the advice of counsel
for the Company shall be conclusively presumed to be done, or omitted to be
done, by the Executive in good faith and in the best interests of the Company.
The cessation of employment of the Executive shall not be deemed to be for
Cause unless and until there shall have been delivered to the Executive a copy
of a resolution duly adopted by the affirmative vote of not less than
three-quarters of the entire membership of the Board at a meeting of the Board
called and held for such purpose (after reasonable notice is provided to the
Executive and the Executive is given an opportunity, together with counsel, to
be heard before the Board), finding that, in the good faith opinion of the
Board, the Executive is guilty of the conduct described in subparagraph (i) or
(ii) above, and specifying the particulars thereof in detail.

         (c) Good Reason. The Executive's employment may be terminated by the
Executive for Good Reason. For purposes of this Agreement, "Good Reason" shall
mean:

         (i) the assignment to the Executive of any duties inconsistent in any
         respect with the Executive's position (including status, offices,
         titles and reporting requirements), authority, duties or
         responsibilities as contemplated by Section 4(a) of this Agreement, or
         any other action by the Company which results in a diminution in such
         position,





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         authority, duties or responsibilities, excluding for this purpose an
         isolated, insubstantial and inadvertent action not taken in bad faith
         and which is remedied by the Company promptly after receipt of notice
         thereof given by the Executive;

         (ii) any failure by the Company to comply with any of the provisions
         of Section 4(b) of this Agreement, other than an isolated,
         insubstantial and inadvertent failure not occurring in bad faith and
         which is remedied by the Company promptly after receipt of notice
         thereof given by the Executive;

         (iii) the Company's requiring the Executive to be based at any office
         or location other than as provided in Section 5(a)(i)(B) hereof or the
         Company's requiring the Executive to travel on Company business to a
         substantially greater extent than required immediately prior to the
         Effective Date;

         (iv) any purported termination by the Company of the Executive's
         employment otherwise than as expressly permitted by this Agreement; or

         (v) any failure by the Company to comply with and satisfy Section
         12(c) of this Agreement.

         For purposes of this Section 6(c), any good faith determination of
"Good Reason" made by the Executive shall be conclusive. Anything in this
Agreement to the contrary notwithstanding, a termination by the Executive for
any reason during the 30-day period immediately following the first anniversary
of the Effective Date shall be deemed to be a termination for Good Reason for
all purposes of this Agreement.

         (d) Notice of Termination. Any termination by the Company for Cause,
or by the Executive for Good Reason, shall be communicated by Notice of
Termination to the other party hereto given in accordance with Section 13(b) of
this Agreement. For purposes of this Agreement, a "Notice of Termination" means
a written notice which indicates the specific





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termination provision in this Agreement relied upon, (ii) to the extent
applicable, sets forth in reasonable detail the facts and circumstances claimed
to provide a basis for termination of the Executive's employment under the
provision so indicated and (iii) if the Date of Termination (as defined below)
is other than the date of receipt of such notice, specifies the termination
date (which date shall be not more than thirty days after the giving of such
notice). The failure by the Executive or the Company to set forth in the Notice
of Termination any fact or circumstance which contributes to a showing of Good
Reason or Cause shall not waive any right of the Executive or the Company,
respectively, hereunder or preclude the Executive or the Company, respectively,
from asserting such fact or circumstance in enforcing the Executive's or the
Company's rights hereunder.

         (e) Date of Termination. "Date of Termination" means (i) if the
Executive's employment is terminated by the Company for Cause, or by the
Executive for Good Reason, the date of receipt of the Notice of Termination or
any later date specified therein, as the case may be, (ii) if the Executive's
employment is terminated by the Company other than for Cause or Disability, the
Date of Termination shall be the date on which the Company notifies the
Executive of such termination and (iii) if the Executive's employment is
terminated by reason of death or Disability, the Date of Termination shall be
the date of death of the Executive or the Disability Effective Date, as the
case may be.

         7. Obligations of the Company upon Termination. (a) Good Reason; Other
Than for Cause, Death or Disability. If, during the Employment Period, the
Company shall terminate the Executive's employment other than for Cause or
Disability or the Executive shall terminate employment for Good Reason:

         (i) the Company shall pay to the Executive in a lump sum in cash
         within 30 days after the Date of Termination the aggregate of the
         following amounts:

                  A. the sum of (1) the Executive's Annual Base Salary through
         the Date of Termination to the extent not theretofore paid, (2) the
         product of (x) the higher of (I) the





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         highest Annual Bonus paid to the Executive for the last three full
         fiscal years prior to the Effective Date and (II) the Annual Bonus
         paid or payable, including any bonus or portion thereof which has been
         earned but deferred (and annualized for any fiscal year consisting of
         less than twelve full months or during which the Executive was
         employed for less than twelve full months), for the most recently
         completed fiscal year during the Employment Period, if any (such
         higher amount being referred to as the "Highest Annual Bonus") and (y)
         a fraction, the numerator of which is the number of days in the
         current fiscal year through the Date of Termination, and the
         denominator of which is 365 and (3) any compensation previously
         deferred by the Executive (together with any accrued interest or
         earnings thereon) and any accrued vacation pay, in each case to the
         extent not theretofore paid (the sum of the amounts described in
         clauses (1), (2), and (3) and any amounts accrued under the Employment
         Agreement with the Executive not otherwise fully accrued under the
         terms of this Agreement shall be hereinafter referred to as the
         "Accrued Obligations"); and

                  B. the amount equal to the product of (1) three and (2) the
         sum of (x) the Executive's Annual Base Salary and (y) the Highest
         Annual Bonus; and

                  C. an amount equal to the excess of (a) the actuarial
         equivalent of the benefit under any excess or supplemental retirement
         plan in which the Executive participates (the "SERP") which the
         Executive would receive if the Executive's employment continued for
         three years after the Date of Termination assuming for this purpose
         that all accrued benefits are fully vested, and, assuming that the
         Executive's compensation in each of the three years is that required
         by Section 5(b)(i) and Section 5(b)(ii), over (b) the actuarial
         equivalent of the Executive's actual benefit (paid or payable), if
         any, under the SERP as of the Date of Termination;

         (ii) for three years after the Executive's Date of Termination, or
         such longer period as may be provided by the terms of the appropriate
         plan, program, practice or policy, the Company shall continue benefits
         to the Executive and/or the Executive's family at least




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         equal to those which would have been provided to them in accordance
         with the plans, programs, practices and policies described in Section
         5(b)(iv) of this Agreement if the Executive's employment had not been
         terminated or, if more favorable to the Executive, as in effect
         generally at any time thereafter with respect to other peer executives
         of the Company and its affiliated companies and their families,
         provided, however, that if the Executive becomes reemployed with
         another employer and is eligible to receive medical or other welfare
         benefits under another employer provided plan, the medical and other
         welfare benefits described herein shall be secondary to those provided
         under such other plan during such applicable period of eligibility.
         For purposes of determining eligibility (but not the time of
         commencement of benefits) of the Executive for retiree benefits
         pursuant to such plans, practices, programs and policies, the
         Executive shall be considered to have remained employed until three
         years after the Date of Termination and to have retired on the last
         day of such period;

         (iii) the Company shall, at its sole expense as incurred, provide the
         Executive with outplacement services the scope and provider of which
         shall be selected by the Executive in his sole discretion; and

         (iv) to the extent not theretofore paid or provided, the Company shall
         timely pay or provide to the Executive any other amounts or benefits
         required to be paid or provided or which the Executive is eligible to
         receive under any plan, program, policy or practice or contract or
         agreement of the Company and its affiliated companies (such other
         amounts and benefits shall be hereinafter referred to as the "Other
         Benefits").

         (b) Death. If the Executive's employment is terminated by reason of
the Executive's death during the Employment Period, this Agreement shall
terminate without further obligations to the Executive's legal representatives
under this Agreement, other than for payment of Accrued Obligations and the
timely payment or provision of Other Benefits. Accrued Obligations shall be
paid to the Executive's estate or beneficiary, as applicable, in a lump sum in
cash within 30 days of the Date of Termination. With respect to the provision
of Other Benefits, the term Other




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Benefits as utilized in this Section 7(b) shall include, without limitation,
and the Executive's estate and/or beneficiaries shall be entitled to receive,
benefits at least equal to the most favorable benefits provided by the Company
and affiliated companies to the estates and beneficiaries of peer executives of
the Company and such affiliated companies under such plans, programs, practices
and policies relating to death benefits, if any, as in effect with respect to
other peer executives and their beneficiaries at any time during the 120-day
period immediately preceding the Effective Date or, if more-favorable to the
Executive's estate and/or the Executive's beneficiaries, as in effect on the
date of the Executive's death with respect to other peer executives of the
Company and its affiliated companies and their beneficiaries.

         (c) Disability. If the Executive's employment is terminated by reason
of the Executive's Disability during the Employment Period, this Agreement
shall terminate without further obligations to the Executive, other than for
payment of Accrued Obligations and the timely payment or provision of Other
Benefits. Accrued Obligations shall be paid to the Executive in a lump sum in
cash within 30 days of the Date of Termination. With respect to the provision
of Other Benefits, the term Other Benefits as utilized in this Section 7(c)
shall include, and the Executive shall be entitled after the Disability
Effective Date to receive, disability and other benefits at least equal to the
most favorable of those generally provided by the Company and its affiliated
companies to disabled executives and/or their families in accordance with such
plans, programs, practices and policies relating to disability, if any, as in
effect generally with respect to other peer executives and their families at
any time during the 120-day period immediately preceding the Effective Date or,
if more favorable to the Executive and/or the Executive's family, as in effect
at any time thereafter generally with respect to other peer executives of the
Company and its affiliated companies and their families.

         (d) Cause; Other than for Good Reason. If the Executive's employment
shall be terminated for Cause during the Employment Period, this Agreement
shall terminate without further obligations to the Executive other than the
obligation to pay to the Executive (x) his Annual Base Salary through the Date
of Termination, (y) the amount of any compensation previously deferred by the
Executive, and (z) Other Benefits, in each case to the extent




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theretofore unpaid. If the Executive voluntarily terminates employment during
the Employment Period, excluding a termination for Good Reason, this Agreement
shall terminate without further obligations to the Executive, other than for
Accrued Obligations and the timely payment or provision of Other Benefits. In
such case, all Accrued Obligations shall be paid to the Executive in a lump sum
in cash within 30 days of the Date of Termination.

         8. Non-exclusivity of Rights. Nothing in this Agreement shall prevent
or limit the Executive's continuing or future participation in any plan,
program, policy or practice provided by the Company or any of its affiliated
companies and for which the Executive may qualify, nor, subject to Section
13(f), shall anything herein limit or otherwise affect such rights as the
Executive may have under any contract or agreement with the Company or any of
its affiliated companies. Amounts which are vested benefits or which the
Executive is otherwise entitled to receive under any plan, policy, practice or
program of or any contract or agreement with the Company or any of its
affiliated companies at or subsequent to the Date of Termination shall be
payable in accordance with such plan, policy, practice or program or contract
or agreement except as explicitly modified by this Agreement.

         9. Full Settlement. The Company's obligation to make the payments
provided for in this Agreement and otherwise to perform its obligations
hereunder shall not be affected by any setoff, counterclaim, recoupment,
defense or other claim, right or action which the Company may have against the
Executive or others. In no event shall the Executive be obligated to seek other
employment or take any other action by way of mitigation of the amounts payable
to the Executive under any of the provisions of this Agreement and such amounts
shall not be reduced whether or not the Executive obtains other employment. The
Company agrees to pay as incurred, to the full extent permitted by law, all
legal fees and expenses which the Executive may reasonably incur as a result of
any contest (regardless of the outcome thereof) by the Company, the Executive
or others of the validity or enforceability of, or liability under, any
provision of this Agreement or any guarantee of performance thereof (including
as a result of any contest by the Executive about the amount of any payment
pursuant to this Agreement), plus in each case





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interest on any delayed payment at the applicable Federal rate provided for in
Section 7872(f)(2)(A) of the Internal Revenue Code of 1986, as amended (the
"Code").

         10.      Certain Additional Payments by the Company.

         (a) Anything in this Agreement to the contrary notwithstanding and
except as set forth below, in the event it shall be determined that any payment
or distribution by the Company or its affiliates to or for the benefit of the
Executive (whether paid or payable or distributed or distributable pursuant to
the terms of this Agreement or otherwise, but determined without regard to any
additional payments required under this Section 10) (a "Payment") would be
subject to excise or other similar tax, or federal income tax above the rate
ordinarily applicable to wages and salaries paid in the ordinary course of
business, whether as a result of the provisions of Sections 280G and 4999 of
the Code, any similar or analogous provisions of any statute or regulation
adopted subsequent to the date hereof, or otherwise, or any interest or
penalties are incurred by the Executive with respect to such tax (such excise
tax, other similar tax or federal income tax, together with any such interest
and penalties, are hereinafter collectively referred to as the "Excise Tax"),
then the Executive shall be entitled to receive an additional payment (a
"Gross-Up Payment") in an amount such that after payment by the Executive of
all taxes (including any interest or penalties imposed with respect to such
taxes), including, without limitation, any income taxes (and any interest and
penalties imposed with respect thereto) and Excise Tax imposed upon the
Gross-Up Payment, the Executive retains an amount of the Gross-Up Payment equal
to the Excise Tax imposed upon the Payments. Notwithstanding the foregoing
provisions of this Section 10(a), if it shall be determined that the Executive
is entitled to a Gross-Up Payment, but that the Payments do not exceed 110% of
the greatest amount (the "Reduced Amount") that could be paid to the Executive
such that the receipt of Payments would not give rise to any Excise Tax, then
no Gross-Up Payment shall be made to the Executive and the Payments, in the
aggregate, shall be reduced to the Reduced Amount.

         (b) Subject to the provisions of Section 10(c), all determinations
required to be made under this Section 9, including whether and when a Gross-Up
Payment is required and the





                                      16
<PAGE>   17



amount of such Gross-Up Payment and the assumptions to be utilized in arriving
at such determination, shall be made by Arthur Andersen L.L.P. or such other
certified public accounting firm as may be designated by the Executive (the
"Accounting Firm") which shall provide detailed supporting calculations both to
the Company and the Executive within 15 business days of the receipt of notice
from the Executive that there has been a Payment, or such earlier time as is
requested by the Company. In the event that the Accounting Firm is serving as
accountant or auditor for the individual, entity or group effecting the Change
of Control, the Executive shall appoint another nationally recognized
accounting firm to make the determinations required hereunder (which accounting
firm shall then be referred to as the Accounting Firm hereunder). All fees and
expenses of the Accounting Firm shall be borne solely by the Company. Any
Gross-Up Payment, as determined pursuant to this Section 10, shall be paid by
the Company to the Executive within five days of the receipt of the Accounting
Firm's determination. Any determination by the Accounting Firm shall be binding
upon the Company and the Executive. As a result of the uncertainty in the
application of Section 4999 of the Code at the time of the initial
determination by the Accounting Firm hereunder, it is possible that Gross-Up
Payments which will not have been made by the Company should have been made
("Underpayment"), consistent with the calculations required to be made
hereunder. In the event that the Company exhausts its remedies pursuant to
Section 10(c) and the Executive thereafter is required to make a payment of any
Excise Tax, the Accounting Firm shall determine the amount of the Underpayment
that has occurred and any such Underpayment shall be promptly paid by the
Company to or for the benefit of the Executive.

         (c) The Executive shall notify the Company in writing of any claim by
the Internal Revenue Service that, if successful, would require the payment by
the Company of the Gross-Up Payment. Such notification shall be given as soon
as practicable but no later than ten business days after the Executive is
informed in writing of such claim and shall apprise the Company of the nature
of such claim and the date on which such claim is requested to be paid. The
Executive shall not pay such claim prior to the expiration of the 30-day period
following the date on which it gives such notice to the Company (or such
shorter period ending on the date that any payment





                                      17
<PAGE>   18





of taxes with respect to such claim is due). If the Company notifies the
Executive in writing prior to the expiration of such period that it desires to
contest such claim, the Executive shall:


         (i) give the Company any information reasonably requested by the
         Company relating to such claim,

         (ii) take such action in connection with contesting such claim as the
         Company shall reasonably request in writing from time to time,
         including, without limitation, accepting legal representation with
         respect to such claim by an. attorney reasonably selected by the
         Company,

         (iii) cooperate with the Company in good faith in order effectively to
         contest such claim, and

         (iv) permit the Company to participate in any proceedings relating to
         such claim;

provided, however, that the Company shall bear and pay directly all costs and
expenses (including additional interest and penalties) incurred in connection
with such contest and shall indemnify and hold the Executive harmless, on an
after-tax basis, for any Excise Tax or income tax (including interest and
penalties with respect thereto) imposed as a result of such representation and
payment of costs and expenses. Without limitation on the foregoing provisions
of this Section 10(c), the Company shall control all proceedings taken in
connection with such contest and, at its sole option, may pursue or forgo any
and all administrative appeals, proceedings, hearings and conferences with the
taxing authority in respect of such claim and may, at its sole option, either
direct the Executive to pay the tax claimed and sue for a refund or contest the
claim in any permissible manner, and the Executive agrees to prosecute such
contest to a determination before any administrative tribunal, in a court of
initial jurisdiction and in one or more appellate courts, as the Company shall
determine; provided, however, that if the Company directs the Executive to pay
such claim and sue for a refund, the Company shall advance the amount of such
payment to the Executive, on an interest-free basis and shall




                                      18
<PAGE>   19




indemnify and hold the Executive harmless, on an after-tax basis, from any
Excise Tax or income tax (including interest or penalties with respect thereto)
imposed with respect to such advance or with respect to any imputed income with
respect to such advance; and further provided that any extension of the statute
of limitations relating to payment of taxes for the taxable year of the
Executive with respect to which such contested amount is claimed to be due is
limited solely to such contested amount. Furthermore, the Company's control of
the contest shall be limited to issues with respect to which a Gross-Up Payment
would be payable hereunder and the Executive shall be entitled to settle or
contest, as the case may be, any other issue raised by the Internal Revenue
Service or any other taxing authority.

         (d) If, after the receipt by the Executive of an amount advanced by
the Company pursuant to Section 10(c), the Executive becomes entitled to
receive any refund with respect to such claim, the Executive shall (subject to
the Company's complying with the requirements of Section 10(c)) promptly pay to
the Company the amount of such refund (together with any interest paid or
credited thereon after taxes applicable thereto). If, after the receipt by the
Executive of an amount advanced by the Company pursuant to Section 10(c), a
determination is made that the Executive shall not be entitled to any refund
with respect to such claim and the Company does not notify the Executive in
writing of its intent to contest such denial of refund prior to the expiration
of 30 days after such determination, then such advance shall be forgiven and
shall not be required to be repaid and the amount of such advance shall offset,
to the extent thereof, the amount of Gross-Up Payment required to be paid.

         11. Confidential Information. The Executive shall hold in a fiduciary
capacity for the benefit of the Company all secret or confidential information,
knowledge or data relating to the Company or any of its affiliated companies,
and their respective businesses, which shall have been obtained by the
Executive during the Executive's employment by the Company or any of its
affiliated companies and which shall not be or become public knowledge (other
than by acts by the Executive or representatives of the Executive in violation
of this Agreement). After termination of the Executive's employment with the
Company, the Executive shall not, without the prior written consent of the
Company or as may otherwise be required by law or legal process,





                                      19
<PAGE>   20




communicate or divulge any such information, knowledge or data to anyone other
than the Company and those designated by it. In no event shall an asserted
violation of the provisions of this Section 10 constitute a basis for deferring
or withholding any amounts otherwise payable to the Executive under this
Agreement.

         12. Successors. (a) This Agreement is personal to the Executive and
without the prior written consent of the Company shall not be assignable by the
Executive otherwise than by will or the laws of descent and distribution. This
Agreement shall inure to the benefit of and be enforceable by the Executive's
legal representatives.

         (b) This Agreement shall inure to the benefit of and be binding upon
the Company and its successors and assigns.

         (c) The Company will require any successor (whether direct or
indirect, by purchase, merger, consolidation or otherwise) to all or
substantially all of the business and/or assets of the Company to assume
expressly and agree to perform this Agreement in the same manner and to the
same extent that the Company would be required to perform it if no such
succession had taken place. As used in this Agreement, "Company" shall mean the
Company as hereinbefore defined and any successor to its business and/or assets
as aforesaid which assumes and agrees to perform this Agreement by operation of
law, or otherwise.

         13. Miscellaneous. (a) This Agreement shall be governed by and
construed in accordance with the laws of the State of Texas, without reference
to principles of conflict of laws. The captions of this Agreement are not part
of the provisions hereof and shall have no force or effect. This Agreement may
not be amended or modified otherwise than by a written agreement executed by
the parties hereto or their respective successors and legal representatives.

         (b) All notices and other communications hereunder shall be in writing
and shall be given by hand delivery to the other party or by registered or
certified mail, return receipt requested, postage prepaid, addressed as
follows:






                                      20
<PAGE>   21



         If to the Executive:
                  Douglas L. Rock

         If to the Company:
                  Smith International, Inc.
                  16740 Hardy Street
                  Houston, TX 77032
                  Fax:  (281) 233-5996
                  Attention:  General Counsel

or to such other address as either party shall have furnished to the other in
writing in accordance herewith. Notice and communications shall be effective
when actually received by the addressee.

         (c) The invalidity or unenforceability of any provision of this
Agreement shall not affect the validity or enforceability of any other
provision of this Agreement.

         (d) The Company may withhold from any amounts payable under this
Agreement such Federal, state, local or foreign taxes as shall be required to
be withheld pursuant to any applicable law or regulation.

         (e) The Executive's or the Company's failure to insist upon strict
compliance with any provision of this Agreement or the failure to assert any
right the Executive or the Company may have hereunder, including, without
limitation, the right of the Executive to terminate employment for Good Reason
pursuant to Section 5(c)(i)-(v) of this Agreement, shall not be deemed to be a
waiver of such provision or right or any other provision or right of this
Agreement.

         (f) The Executive and the Company acknowledge that, except as may
otherwise be provided under any other written agreement between the Executive
and the Company, the employment of the Executive by the Company is "at will"
and, subject to Section l (a) hereof, prior to the Effective Date, the
Executive's employment and/or this Agreement may be




                                      21
<PAGE>   22



terminated by either the Executive or the Company at any time prior to the
Effective Date, in which case the Executive shall have no further rights under
this Agreement ; provided, that this Agreement may not be terminated by the
Company if it is reasonably demonstrated by the Executive that such termination
(i) was at the request of a third party who has taken steps reasonably
calculated to effect a Change of Control or (ii) otherwise arose in connection
with or anticipation of a Change of Control. From and after the Effective Date
this Agreement shall supersede any other agreement between the parties with
respect to the subject matter hereof.

         IN WITNESS WHEREOF, the Executive has hereunto set the Executive's
hand and, pursuant to the authorization from its Board of Directors, the
Company has caused these presents to be executed in its name on its behalf, all
as of the day and year first above written.


                                                /s/ DOUGLAS L. ROCK
                                                -------------------------------
                                                DOUGLAS L. ROCK


                                                SMITH INTERNATIONAL, INC.



                                                By:  /s/ NEAL S. SUTTON
                                                     --------------------------
                                                     Neal S. Sutton





                                      22