Wera 855/1 PZ BTH BiTorsion Extra Hard Pozi Screwdriver Bits

The Wera 855/1 PZ BTH BiTorsion Extra Hard Pozi Screwdriver Bits are precision-engineered for demanding screwdriving applications with Pozidriv screws. Each bit features Wera's innovative BiTorsion zone — a dedicated torsion area that dissipates kinetic energy during peak loads, dramatically reducing the risk of breakage and significantly extending service life compared to standard bits.

Constructed with an extra-hard design, these bits are particularly suited to semi-hard materials where durability is essential. The 1/4" hexagonal shank conforms to DIN ISO 1173-D 6.3, making them compatible with a wide range of holding tools. For best results, Wera recommends pairing these bits with a matching Wera holder. Available in Pozi sizes PZ1, PZ2, and PZ3, all in a 25mm length.

Features and Benefits:
• BiTorsion zone absorbs peak loads to reduce breakage risk
• Extra-hard construction for superior durability in semi-hard materials
• Significantly extended service life over standard bits
• 1/4" hexagon drive compatible with DIN ISO 1173-D 6.3 holding tools
• Colour-coded via Wera's 'Take it easy' tool finder system for quick size and profile identification
• Suitable for use with Pozidriv screws