Carbon steel fully heat treated with a mirror chrome finish. 72 teeth quick release ratchet with knurled handle. The wall drive sockets give 30% more torque. Packed in sturdy heavy duty carrying case. Contents: 9 Metric regular sockets 9, 10, 11, 12, 13, 14, 15, 17 and 19mm 8 Metric deep sockets 10, 11, 12, 13, 14, 15, 17 and 19mm 1 x Ratchet 2 x Extensions 2" (50 mm) and 3" (75mm) 1 x Spinner Disc.