851/4 BDC bits, PH 3 x 50 mm The Wera BiTorsion 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. 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 " hexagon, suitable for holders as per DIN ISO 1173-F 6.3. For Phillips 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 screw head to prevent cam-out
1/4" hexagon Application: Phillips screws Drive 1/4" hexagon, suitable for DIN ISO 1173-F 6.3 bit holders Design BiTorsion for long service life, diamond-coated for secure screw fit. take it easy tool finder Output color coding (red = Phillips) and large stamp to enable the desired bit to be easily located.