"Six-point wheel bearing locknuts are easy to remove or install with these specially designed sockets. Openings resist 'rounding out.' Can be used with an extension and torque wrench to tighten the locknut as required, even when wide-rim wheels are involved. Drive in. 1/2, Pieces qty. 7, Single, Pair, or Set Set, Common Usage Remove/install locknut, Storage Case Included Yes, Works With Wheel bearing locknuts and a torque wrench, Includes Locknut sockets and case. Set includes size 2 3/8in., 2 1/2in. and 55mm locknuts 1 1/2in., 2 3/4in., 2 9/16in. and 2 3/8in. rounded locknuts"