Wera 05056414001 851/1 BTH 1/4'' Hex Phillips Insert Bits are high quality bits for phillips screws that 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.
Wera 851/1 BTH 1/4'' Hex Phillips ® Insert Bits are designed particulary hard for semi-hard materials and feature Wera Connecting Series 1. Wera 851/1 BTH 1/4'' Hex Phillips ® Insert Bits are suitable for holders as per DIN ISO 1173-D 6.3.