This 15 piece screwdriver bit set contains 15 TX 1/2in. hex drive bits, manufactured from high alloy chrome molybdenum steel. The bits are supplied in a metal case for safekeeping and are suited for use on both hand and power tools. Features and Benefits Suited for use with both hand and power tools Manufactured from chrome molybdenum steel for maximum durability Supplied in a plastic case for ease of organisation, storage and transportation of your screwdriver bits 15 piece set is comprehensive for versatile usage Contents 1/2in. Sq. drive x 10mm Hex. bit holder TX 10 x 75mm: T20, T25, T30, T40, T45, T50 and T55 TX 10 x 30mm: T20, T25, T30, T40, T45, T50 and T55 Typical Applications Construction DIY Automotive