General description High quality impact grade S2 steel satin finish bits with a length of 36mm. This 28-piece set includes TRX-Star, Hex, and Spline bits, designed for daily professional use. The set is supplied in a convenient storage case for easy organization. Technical specifications Material: S2 steel Bit length: 36mm Hardness: 58-62 HRC Contents: TRX-Star Bits (T10, T15, T20, T25, T27, T30, T40, T45, T50, T55, T60), Hex Bits (4, 5, 6, 7, 8, 10, 12mm), Spline Bits (M5, M6, M8, M10, M12, M14, M16, M18), Drive Adaptors (3/8" Sq x 10mm Hex, 1/2" Sq x 10mm Hex) Usage Specially heat treated CNC machined tips reduce stress and prevent cam-out under load. Torsion bits absorb impact and transfer maximum torque to the fixing. Colour-coded for fast identification. Other information Lifetime guarantee*