Product Description : Made of high quality Chrome Vanadium Steel , great abrasion resistance performance, fully hardened and durable. Set of 40 hex, torx and spline bits chrome vanadium steel. This set Includes 2 pieces chrome vanadium steel 3/8" and 1/2" drive sockets. All of the bits, with the exception of a few of the larger bits, share the same 12mm diameter hex base, which allows faster bit changes. Each bit has its size imprinted on the bit itself, making it easy to identify them after you've removed a handful from the case. Storage case displays the bit sizes next to each housing. The set is supplied in a durable snap-shut carry case with carry handle. This tool is manufactured to high quality standards. Product Specification : Tool Material : Chrome Vanadium Steel Case Material : Heavy Duty Blow Moulded Case Product Size : (L)140mm x (W)325mm x (H)40mm Product Weight : 1.57kg What's In The Box : Socket adaptors for bits 3/8" & 1/2" Square drive. 7pcs x Hex Short 30mm Hex Bits - 4,5,6,7,8,10 & 12mm 7pcs x Hex Long 70mm Hex Bits - 4,5,6,7,8,10,12mm 5pcs x Spline Short 30mm Bits - 5,6,8,10,12 5pcs x Spline Long 75mm Bits - 5,6,8,10,12 7pcs x Torx Short 30mm Bits - T20, T25, T30, T40, T50, T55 7pcs x Torx Long 75mm Bits - T20, T25, T30, T40, T50, T55 1pc x Heavy duty blow moulded case