The bosch 3 piece extra hard phillips screwdriver bit set provides a complete range of phillips sizes for universal screw-driving across a wide variety of everyday tasks. Manufactured from s2 modified steel with an optimised heat treatment process, these bits deliver extra-hard performance that stands up to demanding use. The result is reliable torque transmission whether you're working with a screwdriver or a drill driver. Each bit features a tapered torsion zone designed to absorb torque peaks, force, and vibration during screw-driving. This helps protect both the bit and the fastener, reducing cam-out and wear over time. The external hex shank ensures a secure connection in three-jaw chucks and standard internal hex tool holders. Suitable for contractors, joiners, and general tradespeople, this set covers ph1, ph2, and ph3 sizes the three most commonly used phillips profiles making it a practical addition to any tool kit or bit holder. Features and benefits: s2 modified steel construction with optimised heat treatment for extra-hard durability tapered torsion zone absorbs torque peaks and vibration during screw-driving external hex shank for secure fit in three-jaw chucks and hex tool holders includes ph1, ph2, and ph3 for comprehensive phillips coverage specifications: length: 25mm net weight: 0.016Kg contents: ph1 phillips bit ph2 phillips bit ph3 phillips bit