Wera - 5056535001 Series 1 851/1 Z Sheet Metal Bit, Phillips PH 4 Head x 32mm Blade

The Wera 05056535001 is a single 1/4″ hex drive Phillips PH4 × 25 mm (1″) bit from Wera’s premium 800/1 TZ series (Tough-Viscous, extra-hard zone-tempered). Designed for heavy-duty, high-torque applications where standard bits can’t survive — especially large #4 Phillips screws in construction, machinery, trailers, and industrial equipment. The special Tough-Viscous tempering process gives it a hard tip for long wear life and a softer ductile zone that absorbs shock and prevents snapping under extreme loads or impact drivers.