Bosch Extra Hard PH1 Phillips Screwdriver Bit Set, 3-Piece, 25 millimetres

The Bosch Extra Hard PH1 Phillips Screwdriver Bit Set, 3-Piece, 25 mm is built for general fastening applications. Supplied as three identical pieces, the set provides immediate replacements to keep assembly work moving without interruption. It suits tradespeople and DIY users carrying out everyday refurbishment and routine screwdriving. The bits do not remove material; they handle rotational driving only. Precise machining ensures predictable engagement with common household and workshop fasteners.

Tool compatibility relies on a standard 1/4″ hex shank. Because of this base shape, the bits fit directly into power screwdrivers, rotary drills, and drivers with a matching holder. Standard chucks accept the shank without additional adapters or specialised collets. A compact 25 mm overall length keeps the bit manageable when working near adjacent surfaces or inside cabinetry. Consistent mechanical engagement across varied fastening jobs is supported by this straightforward, low-profile format.

• Modified S2 steel: Hardened construction that withstands high torque loads without snapping.
• PH1 Phillips tips: Engages standard cross-head screws securely to prevent stripping during installation.
• 4 mm bit diameter: Maintains rigid shaft stability when transferring rotational power to the fastener.
• Anti-cam-out design: Grips the fastener tightly to reduce slipping and manage mechanical stress.
• General screwdriving rating: Supports common fastening jobs across a range of base materials and everyday applications.