This 1/2 inch drive 45 piece metric and imperial socket set comes in a sturdy sheet steel case, all sockets have a bi-hexagon anti-slip-drive profile and are made from selected steel alloys and chrome plated. The set contains:- 22 No 50 Metric Sockets 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 30, 32 and 34mm 17 No 50a Imperial sockets 3/8, 7/16, 1/2, 9/16, 19/32, 5/8, 11/16, 3/4, 25/32, 13/16, 7/8, 15/16, 1, 1 1/16, 1 1/8, 1 3/16 and 1 1/4 inch 1No 512 Ratchet 1 No 509 Extension 75mm (3inch) long 1 No 509 Extension 127mm (5inch) long 1 No 509 Extension 254mm (10inch) long 1 No 506 T-handle 1 No 510 Universal joint