Made from chrome vanadium steel. Ideal socket set for mechanics and D.I.Y. enthusiasts. Set includes: 18pc 1/2" drive sockets (sizes): 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 22, 24, 27, 30 and 32mm. 2pc 1/2" drive extension bars: 5", 10". 2pc 1/2" drive spark plug sockets: 16mm, 21mm. 1pc 1/2" drive quick release ratchet handle. 1pc 3 way adaptor. 1pc 1/2" drive universal joint. Supplied in blow moulded carry case for easy storage