T3839 Socket Set of 39 Metric 3/8in DriveThe Teng T3839 Socket Set is a comprehensive 39 piece 3 8in drive metric socket set designed for professional automotive, mechanical and workshop use. Manufactured from strong chrome vanadium steel in accordance with ISO9000 and AS954 standards, these 6 point sockets deliver excellent torque performance while reducing the risk of rounding fasteners. This versatile set includes regular and deep hex sockets, spark plug sockets, extension bars, adaptors