12-piece 3/8" hex socket set: 1/4, 5/16, 11/32, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16 and 7/8".17-piece 3/8" hex sockets 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21 and 22 mm.2-piece 3/8" spark plug sockets, 16 and 21 mm.1-piece 3/8" ratchet, quick-release, 60 teeth/6° action angle.3-piece 3/8" extension bars, 3", 5" and 10".1-piece 3/8" universal joint.1-piece 3/8" sliding T bar: 8".1-piece 3/8" breaker bar with two-component handle: 10".Matte finish.High-performance alloy steel.Case: high density polythene (HDPE).Standards: ISO 1174 and DIN 3120