High quality impact grade S2 steel satin finish bits, each size in 36 and 75mm lengths. Heat treated CNC machined tips reduce stress and prevent cam-out under load. Torsion bits absorb impact and transfer maximum torque to the fixing. Hardened (58-62 HRC) and tempered for added strength. Colour-coded for fast identification. Supplied in storage case with inclined tray for quick and easy bit selection. One of a comprehensive range of Premier Hand Tools, suitable for daily professional use. High quality impact grade S2 steel satin finish bits, each size in 36 and 75mm lengths. Heat treated CNC machined tips reduce stress and prevent cam-out under load. Torsion bits absorb impact and transfer maximum torque to the fixing. Hardened (58-62 HRC) and tempered for added strength. Colour-coded for fast identification. Contents: TRX-Star* Bits; T20, T25, T30, T40, T45, T50, T55, T60 (1 each 36 and 75mm), Hex Bits; 4, 5, 6, 7, 8, 10, 12mm (1 each 36 and 75mm), Spline Bits; M5, M6, M8, M10, M12