1/4" and 3/8” socket set High performance alloy steel Matt finish ISO 1174 DIN 3120 Case: High Density Polythene (HDPE) Contents, 34 pcs 12 pcs 3/8" hex sockets: 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 22 mm 1 pc 3/8" ratchet quick release, 60 teeth/6° action angle 2 pcs 3/8" extension bars 75 mm/3" & 150 mm/6" 1 pc 3/8" universal joint 1 pc 3/8" x 1/4" bit holder 2 pcs 3/8" spark plug sockets hex: 16 mm (5/8"), 21 mm (13/16") 1 pc 1/4" spinner with 2-component handle 1 pc 1/4" x 1/4" bit holder 3 pcs 1/4" bits: slotted 4, 5.5, 7 mm 4 pcs 1/4" bits: PH 1, 2, 3, 4, 6 pcs 1/4" bits: Hex 3, 4, 5, 6, 7, 8 mm