Wera 05056400001 851/1 BDC 1/4'' Hex Phillips Insert Bits are high quality bits for phillips 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.
Wera 851/1 BDC 1/4'' Hex Phillips ® Insert Bits feature torsion zone where kinetic energy is diverted from peak loads and softer bitorsion zone to prevent the bit tip from twisting under peak loads which greatly extends the products service life. Wera 851/1 BDC 1/4'' Hex Phillips ® Insert Bits are suitable for holders as per DIN ISO 1173-D 6.3.