A surgical system comprising: a tether; a connector configured for disposal of the tether; a spinal rod configured for disposal with the connector; a coupling member engageable with the spinal rod and the connector; a surgical driver; and a surgical instrument comprising: a first member defining a cavity and including a locking surface disposed with the cavity, the locking surface being engageable with the tether to fix the tether with the first member; a second member including an inner surface that defines a longitudinal passageway configured for disposal of the surgical driver engageable with a spinal construct, the second member further including at least one mating element being engageable with the spinal construct; and an actuator connected with the first and second members (18, 60) and being configured to incrementally tension the tether, wherein the first member includes a circumferential flange that movably supports the actuator, and the second member includes an outer surface that includes a threaded surface configured for engagement with a threaded inner surface of the actuator such that the actuator is rotatable relative to the flange to axially translate the first member relative to the second member, wherein the surgical driver is disposable with the longitudinal passageway and engageable with the coupling member having a break off head which includes a tool engaging portion configured to engage the surgical driver, wherein the break off head can fracture and separate at a predetermined toque limit in a range of 9 to 12.5 Nm, and wherein at least one mating element is engageable with the connector. a tether; a connector configured for disposal of the tether; a spinal rod configured for disposal with the connector; a coupling member engageable with the spinal rod and the connector; a surgical driver; and a surgical instrument comprising: a first member defining a cavity and including a locking surface disposed with the cavity, the locking surface being engageable with the tether to fix the tether with the first member; a second member including an inner surface that defines a longitudinal passageway configured for disposal of the surgical driver engageable with a spinal construct, the second member further including at least one mating element being engageable with the spinal construct; and an actuator connected with the first and second members (18, 60) and being configured to incrementally tension the tether, wherein the first member includes a circumferential flange that movably supports the actuator, and the second member includes an outer surface that includes a threaded surface configured for engagement with a threaded inner surface of the actuator such that the actuator is rotatable relative to the flange to axially translate the first member relative to the second member, wherein the surgical driver is disposable with the longitudinal passageway and engageable with the coupling member having a break off head which includes a tool engaging portion configured to engage the surgical driver, wherein the break off head can fracture and separate at a predetermined toque limit in a range of 9 to 12.5 Nm, and wherein at least one mating element is engageable with the connector. a first member defining a cavity and including a locking surface disposed with the cavity, the locking surface being engageable with the tether to fix the tether with the first member; a second member including an inner surface that defines a longitudinal passageway configured for disposal of the surgical driver engageable with a spinal construct, the second member further including at least one mating element being engageable with the spinal construct; and an actuator connected with the first and second members (18, 60) and being configured to incrementally tension the tether, wherein the first member includes a circumferential flange that movably supports the actuator, and the second member includes an outer surface that includes a threaded surface configured for engagement with a threaded inner surface of the actuator such that the actuator is rotatable relative to the flange to axially translate the first member relative to the second member, wherein the surgical driver is disposable with the longitudinal passageway and engageable with the coupling member having a break off head which includes a tool engaging portion configured to engage the surgical driver, wherein the break off head can fracture and separate at a predetermined toque limit in a range of 9 to 12.5 Nm, and wherein at least one mating element is engageable with the connector.