Teng TEN921510 1/2in Hex Bit Impact Socket 10mm The Teng 1/2in Drive Hex Bit Impact Socket is made from chrome molybdenum with a black finish. Fitted with a locking pin and retaining ring facility. Each socket is individually branded and size marked for quick identification. This Teng 1/2in Drive Hex Bit Impact Socket has the following specification: Size: 10mm Length: 78mm