Sealey AK219 TRX-Star/Spline/Hex Bit and Driver Set 42 Piece 3/8 Inch & 1/2 Inch Square Drive Complete with Carry Case  The Sealey AK219 is a 42 Piece Set of bits in 2 lengths 30mm and 75mm. Set includes 3/8\" and 1/2\"Sq drive to 10mm hex Chrome Vanadium steel bit adaptors. Supplied in carry-case with inclined tray for quick and easy bit selection.  Features:   Long and short TRX-Star, spline and hex bits  Convenient high impact carry-case presents bits at an angle for easy selection   Chrome Vanadium 6150 steel bits hardened to 52-53 HRC and tempered for added strength  Comes with:   Carry case with inclined tray   Hex Bits: 4, 5, 6, 7, 8, 10, 12mm (1 each 30 & 75mm)  Drive Adaptors: 3/8\"Sq x 10mm Hex, 1/2\"Sq x 10mm Hex  XZN Spline Bits: M5, M6, M8, M10, M12 (1 each 30 & 75mm)  TRX-Star Bits: T20, T25, T30, T40, T45, T50, T55, T60 (1 each 30 & 75mm)  Specification:  Hex Bits: 4, 5, 6, 7, 8, 10, 12mm (1 each 30 & 75mm)  Drive Adaptors: 3/8\"Sq x 10mm Hex, 1/2\"Sq x 10mm Hex  XZN Spline Bits: M5, M6, M8, M10, M12 (1 each 30 & 75mm)  TRX-Star Bits: T20, T25, T30, T40, T45, T50, T55, T60 (1 each 30 & 75mm)