This 55 Piece Set is a professional quality socket set ideal for garages and workshops, manufactured from heat treated and hardened Chrome vanadium Steel and finished in high quality chrome for corrosion resistance. The lifetime guarantee covers defects in manufacture or materials during the lifetime of the tool, however this guarantee does not apply to the ratchet mechanism. 5 x 3/8in Drive Torx Socket Bits (T40, T45, T50, T55, T60)9 x 3/8in Drive Sockets (3/8in, 7/16in, 1/2in, 9/16in, 5/8in, 11/16in. 3/4in, 13/16in, 7/8in)10 x 3/8in Deep Drive Sockets (5/16in, 3/8in, 7/16in, 1/2in, 9/16in, 5/8in, 11/16in, 3/4in, 13/16in, 7/8in)14 x 3/8in Drive Sockets (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19mm)14 x 3/8in Deep Drive Sockets (6,7,8,9,10,11,12,13,14,15,16,17,18,19mm)2 x 3/8in Drive Extension Bar (75, 150mm)1 x Quick Release Ratchet handle