The Bosch PRO 3 Piece Impact Control Torsion Phillips Screwdriver Bits are a set of PH1, PH2 and PH3 bits for heavy-duty screwdriving. They are made from heat-treated modified steel for strength and resistance to high torque. An extended torsion zone absorbs torque stress at the tip of the bit, helping it withstand demanding applications without breaking. The magnetic tip with black phosphate coating makes handling screws easier. Colour-coded rings show the head type, and laser markings make it quick to pick out the size you need. With an impact-rated 1/4" hex shank, these Phillips screwdriver bits suit both impact drivers and drill drivers. They are a practical choice for installers and tradespeople who need bits that last in heavy-duty work. Features and Benefits: • Heat-treated modified steel for strength and resistance to high torque • Extended torsion zone absorbs torque stress at the tip • Magnetic tip with black phosphate coating for easier screw handling • Colour-coded rings and laser markings for quick head type and size identification • 1/4" impact-rated hex shank for impact drivers and drill drivers Specifications: Net Weight: 0.012 kg Length: 25 mm / 25 mm / 25 mm Sizes: PH1 / PH2 / PH3 Shank: 1/4" hex