The Bosch 13 Piece M Extra Hard Screwdriver Bit Set is a versatile collection of 25mm screwdriver bits designed for universal screw-driving with both screwdrivers and drill drivers. Manufactured from S2 Modified Steel with an optimised heat treatment process, these bits achieve an extra-hard quality that delivers reliable performance across a wide range of tasks. The 1/4-inch external hex shank ensures a strong, secure connection with maximum torque transmission in three-jaw chucks and 1/4" internal hex tool holders. Each bit features a tapered torsion zone that absorbs torque peaks, force, and vibration during screw-driving — helping to protect both the bit and the fastener under demanding working conditions. The set covers the most commonly used Phillips and Pozidrive sizes, making it a practical addition to any tradesperson's kit. Features and Benefits: • S2 Modified Steel construction with optimised heat treatment for extra-hard, long-lasting performance • Tapered torsion zone absorbs torque peaks, force, and vibration during screw-driving • 1/4" external hex shank for strong connection and maximum torque transmission in three-jaw chucks and 1/4" hex tool holders • Covers PH1, PH2, PH3, PZ1, PZ2, and PZ3 sizes for universal screw-driving applications • Compatible with screwdrivers and drill drivers for versatile use on site Specifications: Bit Length: 25mm Net Weight: 0.137kg Contents: PH1 (x2), PH2 (x3), PH3 (x1), PZ1 (x2), PZ2 (x3), PZ3 (x1), Quick Change Universal Holder (x1)

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