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