Premier TRX-Star*/Hex/Spline Bit Set 3/8" & 1/2"Sq Drive 42pc

- One of a comprehensive range of Premier Hand Tools, suitable for daily professional use. - Chrome Vanadium 6150 steel bits hardened to 52-53 HRC and tempered for added strength. - Set includes 3/8" and 1/2"Sq drive to 10mm hex Chrome Vanadium steel bit adaptors. - Supplied in storage case with inclined tray for quick and easy bit selection. - Contents: TRX-Star* Bits; T20, T25, T30, T40, T45, T50, T55, T60 (1 each 30 and 75mm), Hex Bits; 4, 5, 6, 7, 8, 10, 12mm (1 each 30 and 75mm), Spline Bits; M5, M6, M8, M10, M12 (1 each 30 and 75mm), Drive Adaptors; 3/8"Sq x 10mm Hex, 1/2"Sq x 10mm Hex. - Lifetime guarantee*.