Draper Metric Socket Set, 1/2" Square Drive (30 Piece) - H30MN/BExpert Quality, twelve point sockets made from chrome vanadium steel that's hardened and tempered with a polished finish. Each socket has a knurled ring for extra grip. Supplied with a 72 tooth reversible ratchet and accessories. Packed in a tough plastic storage case with soft grip handle. 23 x Sockets: 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 30, 32mm 3 x Spark plug sockets: 10, 12, 14mm 1 x 72 tooth