Wiha PH1 x 50mm Pozidrive Power Insert Bit 1/4" Hex With Torsion Zone

Wiha Pozidriv Power insert bits are precision-machined in Germany to 61 HRC hardness, providing extended service life on both hand and power tool applications. The 1/4" hex shank fits standard impact drivers, drill-drivers, and bit holders. The torsion zone absorbs peak torque shock, extending bit life on power tools and reducing fastener head damage. Manufactured to Wiha's exacting geometry standards, these bits seat fully in the fastener recess — reducing cam-out and preserving fastener head condition.

Where this tool is used

• Construction and fit-out — power-driving plasterboard, framing, and decking fasteners at speed with a drill-driver or impact wrench.
• Industrial assembly and production lines — repetitive fastening on jigs, panels, and components where bit life and consistent engagement are critical.
• Automotive and mechanical workshops — driving fasteners on body panels, trim, and under-bonnet components using a 1/4" impact driver or ratchet.

Key specifications

Selecting the right option

Match drive profile and size precisely to the fastener. Torsion-zone bits extend life under impact and are recommended for high-torque applications. Power bits are hardened for impact driver use; standard bits suit hand tools and light drill-drivers. Replace bits showing tip wear — a worn bit damages fasteners and is a safety risk on power tools.