This impact socket is 1\"(F) x 3/4\"(M) in size and is designed for use with an impact wrench The Draper 93499 Impact Socket Converter is robust and durable with its hardened and tempered steel construction and chemically blacked finish. It is designed for use with impact wrenches. Features: Expert quality forged from chrome molybdenum steel hardened, tempered and chemically blacked for corrosion protection Supplied with pin and ring Use it with an impact wrench Specification: Size: 1\"(F) x 3/4\"(M)