WHOLESALE 5-Piece Impact Adapter and Reducer Set. Chrome vanadium steel construction. Spring loaded detent ball and chamfered ends to provide a secure fit into sockets. Set includes 1/4""""(F)x3/8""""(M) 3/8""""(F)x1/2""""(M) 1/2""""(F)x3/4""""(M) Adapters and 3/8""""(F)x1/4""""(M) 1/2""""(F)x 3/8""""(M) Reducers. Meets ANSI Standards.Illinois Industrial Tool Professional series tools