34 Piece 1/4 in & 3/8 in square drive socket set with dynamic drive profile, made from chrome vanadium with a matt chrome-plated finish. Contents include: 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 & 22 mm. 6-point dynamic drive sockets 3/8 in extension bars 3 in & 6 in. 3/8 in universal joint. 3/8 in & 1/4 in bit holder. 3/8 in spark plug sockets. 16mm (5/8 in), 21mm (13/16 in). 1/4 in spinner handle, 1/4 in x 1/4 in bit holder. 1/4 in bits flat 4, 5.5, 7 mm. phillips 1, 2, 3 & 4.hex 3, 4, 5, 6, 7, 8 mm 3/8 in ratchet handle 54 teeth Outstanding value from a world famous br&., 34 Piece: 1/4 inch & 3/8 in square drive socket set with dynamic drive profile, made from chrome vanadium with a matt chrome-plated finish., The plastic case is oil & temperature resistant polypropylene.