The Bosch PRO 20 Piece Impact Screwdriver Bit Set is a professional-grade bit set designed for demanding screwdriving applications, offering up to 50x more robustness than a standard Bosch Extra Hard bit. Constructed from heat-treated modified steel, these impact screwdriver bits deliver outstanding strength and resistance to high torque. An extended torsion zone absorbs torque stress at the tip, preventing breakage during heavy-duty use — making them a reliable choice for installers and contractors working with impact drivers and drill drivers. Colour-coded rings identify the head type at a glance, while laser markings allow quick size selection even in low-light conditions. The bits are housed in a sturdy case and arranged in modular holders, giving you the option to integrate them into your existing toolbox setup. With a comprehensive selection of Phillips, Pozi, Torx, and slotted bits across 25mm, 55mm, and 90mm lengths, this set covers the majority of everyday screwdriving tasks. It's particularly well suited to electricians, joiners, and general contractors who regularly work with high-torque power tools. Features and Benefits: • Up to 50x more robust than a standard Bosch Extra Hard bit • Extended torsion zone absorbs torque stress to prevent bit breakage • Heat-treated modified steel for strength and high-torque resistance • 1/4" impact-rated hex shank compatible with impact drivers and drill drivers • Colour-coded rings and laser markings for fast, accurate bit identification • Supplied in a sturdy case with modular holders for toolbox integration Specifications: Net Weight: 0.325 kg Contents: 25mm Screwdriver Bits: PH1, PH2 (x2), PZ2, PZ3, T10, T15, T20, T25, T30, T40, SL5.5 55mm Screwdriver Bits: PZ2, T20, T25 90mm Screwdriver Bits: PH2, T20, T25, T30 60mm Bit Holder: Standard Bit Holder