Teng Tools sockets are manufactured from strong chrome vanadium steel in accordance with ISO9000 and AS954. They provide excellent torque, whilst reducing the risk of rounding fasteners.This TENT3839 3/8 inch drive 6-point socket set comprises 39 pieces, which are supplied in a plastic case which has a click lock and folding handle. Specification: 14 x 3/8 Hex sockets 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21 and 22mm 6 x 3/8 Hex deep sockets deep sockets 8, 10, 12, 13, 17, and 19mm 1 x 3/8 Reversible ratchet 1 x 3/8 Universal joint 1 x 3/8 Extension bar 150mm (6 inch) 1 x 3/8 Wobble extension bar 75mm (3 inch) 2 x 3/8 Spark plug sockets 16 and 21mm 1 x 3/8 Adaptor 1/2inch 1 x 3/8 Hex bit adaptor 2 x 1/4 Slotted screwdriver bits 4 and 5.5mm 2 x 1/4 Phillips bits PH1 and PH2 2 x 1/4 Pozidriv bits PZ1 and PZ2 2 x 1/4 Hex bits 5 and 6mm 3 x 1/4 Torx bits T10, T15 and T20 12 Months Guarantee!