The Ken-Tool 4-Piece Lug Nut Remover Impact Socket Set has internal tapered reverse threads that lock onto damaged nuts or wheel locks and easily tap the power of an impact wrench to pull them off. Packaged in a convenient compact storage case, the set includes four sockets: 3/4", 13/16', 1" and 1-1/8" — all with a 1/2" drive. The set comes with a limited lifetime warranty.