The Bosch 9 Piece S Extra Hard Screwdriver Bit Set is a Phillips head bit set designed for universal screw-driving with screwdrivers and drill drivers across a wide range of everyday fastening tasks. Each bit is manufactured from S2 Modified Steel and undergoes an optimised heat treatment process to achieve extra-hard quality. This makes the set a reliable choice for tradespeople and contractors who need consistent performance across varied materials and fixings. The tapered torsion zone is a key design feature, absorbing force and vibrations during screw-driving to cope with torque peaks without compromising the bit. The ¼-inch external hex shank ensures a secure connection with strong torque transmission in both three-jaw chucks and ¼" internal hex tool holders. Features and Benefits: • S2 Modified Steel with optimised heat treatment for extra-hard durability • Tapered torsion zone absorbs force and vibrations to handle torque peaks • ¼" external hex shank for maximum torque transmission in chucks and hex tool holders • Suitable for use with screwdrivers and drill drivers • Nine-piece set with multiple PH1, PH2, and PH3 bits for versatile coverage Specifications: Bit Length: 25mm Net Weight: 0.137kg Contents: PH1 (x2), PH2 (x4), PH3 (x2), Quick Change Universal Holder (x1)

Retailer feed snapshot imported on 21 October 2026. Not live-checked or automatically refreshed. Confirm delivery, stock and final price at the retailer.