Product related parameters

*These specialty wrenches are open-ended discs, slipping easily over hex sided fasteners. Once in place, your existing ratchet, extender or torque wrench is attached to the crowfoot drive hole to drive fasteners

*Metric sizes from 8 mm to 24 mm, and are universally compatible with either 3/8-inch or 1/2-inch drive head tools(3/8-inch drive: 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 mm; 1/2-inch drive: 21, 22, 24 mm )