The BlueSpot Tools 1/2in 1/4in Metric Socket Set is manufactured from chrome vanadium for increased durability, featuring knurled sockets for a secure grip. It is supplied in a sturdy plastic case with metal clips for quick and convenient storage. The set includes 18 x 1/2in Sockets (10-32mm), 4 x 1/2in Deep Wall Sockets (14, 15, 17, 19mm), 2 x 1/2in Spark Plug Sockets (16, 21mm), 1 x 1/2in Quick Release Ratchet Handle, 2 x 1/2in Extension Bars (5in, 10in), 1 x 1/2in Three Way Adaptor, 1 x 1/2in Universal Joint, and 1 x Coupler 1/2in x 5/16in (8mm). It also contains 13 x 1/4in Sockets (4-14mm), 8 x 1/4in Deep Wall Sockets (6-13mm), 1 x 1/4in Quick Release Ratchet Handle, 2 x 1/4in Extension Bars (2in, 4in), 1 x 1/4in Sliding T Bar, 1 x 1/4in Spinner Handle, 1 x 1/4in Universal Joint, 1 x 1/4in Flexible Extension Bar (150mm). Additionally, it comes with 2 x 30mm Phillips Bits (PH3, PH4), 2 x 30mm Pozi Bits (PZ3, PZ4), 4 x 30mm TORX Bits (T40, T45, T50, T55), 4 x 30mm Hex Bits (8, 10, 12, 14mm), 3 x 30mm Slotted Bits (8, 10, 12mm), 1 x 30mm Bit Adaptor, 2 x 1/4in Phillips Bit Sockets (PH1, PH2), 2 x 1/4in Pozi Bit Sockets (PZ1, PZ2), 6 x 1/4in TORX Bit Sockets (T8, T10, T15, T20, T25, T30), 4 x 1/4in Hex Bit Sockets (3, 4, 5, 6mm), 3 x 1/4in Slotted Bit Sockets (SL4, SL5.5, SL7), and 3 x Hex Key Wrenches (1.5, 2, 2.5mm).