Patent ID: 6846045

Claim:
A cutting tool comprising a tool body having a longitudinal axis, a tapered cutting portion symmetrical about said axis, a radial flange axially behind said tapered cutting portion and a cylindrical shank axially behind said radial flange, said tool body having a seat at a forward end of said cutting portion, said seat having a given maximum outer diameter, an insert bonded into said seat, said insert comprising a central portion made of a hardened material and having a tapered forward cutting end diverging to a maximum first diameter, a rearward end having a maximum second diameter, said first diameter larger than said second diameter, and an elongate midsection extending from said first diameter to said second diameter, an annular collar also made of said hardened material, said annular collar having a central aperture for receiving said midsection of said insert, and an outer diameter sized to fit within said given maximum outer diameter of said seat.