This 56 piece Industrial Socket Set contains 1/4" and 1/2" ratchet handles tested to an extremely high level of torque. The range of sockets extends from 4mm to 32 mm and includes plug sockets in 16mm and 21mm. There are square drive sockets with screwdriver inserts for slotted, Phillips, Torx and hex headed screws, as well as hex keys of 1.25, 1.5, 2.0, 2.5 and 3mm. This set is supplied in a robust powder coated steel case.