This is an ideal socket set for the professional mechanic in chrome vanadium steel (31 CrV 3 for industry, workshop and construction). It offers a range from 8 to 34mm and comprises 24 pieces in total. Supplied in a robust powder coated steel box it includes a tried and tested (100,000 times to an extremely high level of torque) 3/8" square drive ratchet. The 16 standard sockets range from 6 to 24mm. Also included are two extensions, a T-adaptor, a universal joint and three plug sockets (16, 18 and 21mm).