The Bosch PRO 40 Piece Impact Multiconstruction Drill and Screwdriver Bit Set is a comprehensive mixed bit set designed for heavy-duty screwdriving and precision drilling across a range of construction materials. Ideal for interior fitters and installers, the set includes a wide selection of impact-rated screwdriver bits manufactured from heat-treated modified steel, giving them the strength and torque resistance needed for demanding fixing applications. An extended torsion zone absorbs torque stress at the tip, significantly reducing the risk of breakage under high-load conditions. Colour-coded rings and laser markings make it quick and easy to identify the correct bit on site. The EXPERT HEX-9 Multi Construction drill bits feature carbide tips and hardwearing cutting edges for reliable performance across multiple materials. Efficient flute geometry clears chips during drilling, helping to extend the working life of each bit. All bits feature a 1/4" impact-rated hex shank, making them compatible with both impact drivers and drill drivers. The full set is housed in a sturdy carry case with organised holders, allowing you to build the contents into your own toolbox setup as needed. Features and Benefits: • Heat-treated modified steel construction for strength and high-torque resistance • Extended torsion zone absorbs torque stress at the tip to prevent breakage • Colour-coded rings and laser markings for quick, easy bit identification on site • Carbide-tipped EXPERT HEX-9 Multi Construction drill bits for hardwearing performance • Bosch Centering Geometry with specially designed centring tip for accurate hole starts • Efficient flute design removes chips and extends drill bit service life • 1/4" impact-rated hex shank compatible with impact drivers and drill drivers • Sturdy carry case with modular holders to integrate into your existing toolbox Specifications: Net Weight: 0.604 kg Contents: 25 mm Screwdriver Bits: PH1; PH2 (x3); PH3; PZ1; PZ2 (x2); PZ3; T10; T15 (x2); T20 (x3); T25 (x3); T27; T30 (x3); T40; H4; H5; SL4.5; SL5.5; SL6.5 55 mm Screwdriver Bits: PH2; T20; T25 50 mm Nutsetters: 8 mm; 10 mm; 13 mm 60 mm Bit Holders: Standard Bit Holder; Quick Change Bit Holder EXPERT HEX-9 Multi Construction Drill Bits: 5 mm; 6 mm; 8 mm (x2)