Comprehensive set of TRX-Star*, Hex and Spline bits in Chrome Molybdenum steel, including a 1/2"Sq Drive bit holder with 2mm grub screw. Phosphate finish for corrosion resistance. Supplied in a storage case. Features & Benefits:Comprehensive set of TRX-Star*, Hex and Spline bits in Chrome Molybdenum steel, including a 1/2"Sq drive bit holder with 2mm grub screw.Phosphate finish for corrosion resistance.Suitable for use with any impact tool.Contents: Bits; TRX-Star* - T30, T40, T45, T47, T50, T55, T60, T70, Hex - 6, 7, 8, 10, 12, 14, 17, 19mm, Spline - M6, M8, M9, M10, M12, M14, M16, M18, 1/2"Sq Drive Bit Holder.Supplied in a storage case.Lifetime guarantee*.Model No. AK5612 Specifications: Model No AK5612 Brand: Premier Contents: Bits; TRX-Star* - T30, T40, T45, T47, T50, T55, T60, T70, Hex - 6, 7, 8, 10, 12, 14, 17, 19mm, Spline - M6, M8, M9, M10, M12, M14, M16, M18, 1/2"Sq Drive Bit Holder Drive: 1/2"Sq Maximum Length: 35mm Minimum Length: 35mm Nett Weight: 0.0