Wera 855/4 BDC BiTorsion Diamond Pozi Screwdriver Bits

Bits for Pozidriv* screws with tiny diamond particles on the bit tip. This ensures a secure fit of the bit in the screw, reduces the contact pressure required and lowers the risk of slipping. Comes with Torsion zone - where kinetic energy is diverted from peak loads - and softer BiTorsion zone to prevent the bit tip from twisting under peak loads. This greatly extends the product service life; ¼" hexagon, suitable for holders as per DIN ISO 1173-F 6.3. * Pozidriv = registered trademark of European Industrial Service Ltd. Features and Benefits • Suitable for Pozidriv screws • BiTorsion zone to absorb peak loads • Considerable reduction in the risk of breakage, significant increase in service life • Diamond coating for a secure fit in the screw, literally bites into the screwhead to prevent cam-out • 1/4" hexagon drive (Wera connecting series 4) Contents 855/4 BDC bits, PZ 1 x 50 mm