"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. Pieces qty. 7, Drive in. 1/2, Common Usage Remove/install locknut, Single, Pair, or Set Set, Works With Wheel bearing locknuts and a torque wrench, Storage Case Included Yes, 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"