Set of 25 bolt extractors: 1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32", 7/16", 15/32", 1/2", 17/32", 9/16", 19/32", 5/8", 21/32", 11/16", 23/32", 3/4", 25/32", 13/16", 27/32", and 7/8", with multi-fluted hex head. These extractors are used to remove studs, hoses, screws, grease fittings etc...they fit most bolts from 1/8" to 7/8" and can be used with wrenches or sockets. These extractors are stored in a metal case.