American Forge & Foundry Torque Limiting Socket, 1/2" Drive, 21MM, 150 Ft/Lbs.

Prevents overtightening or uneven tightening of lug nuts. reduces risk of wheel and brake rotor damage. spring steel design stops turning once preset torque is reached. solid one piece construction. roll stamped with size, torque rating 1/2 drive 21mm 150ft/lb torque socket. 1 year limited warranty.