Bits Wera 855/1 BDC

Bits Wera 855/1 BDC is a Pozidriv PZ 2 screwdriver bit with a 25 mm working length and a 1/4" (6.35 mm) hex shank. The bit tip is coated with tiny diamond particles to improve grip in the screw recess and reduce the contact pressure required, while integrated torsion and BiTorsion zones absorb peak loads and protect the tip from twisting, extending service life.

Advantages

The diamond-particle tip increases friction between bit and screw to reduce cam-out. The torsion zone diverts kinetic energy from peak loads and the softer BiTorsion zone prevents tip deformation under sudden stress. The 1/4" hexagon shank fits standard holders conforming to DIN ISO 1173-D 6.3, allowing quick interchangeability and compatibility with many screwdrivers and bit holders.

Suitable for

• Precision assembly and repair tasks requiring Pozidriv PZ 2
• Work with handheld screwdrivers, electric screwdrivers and bit holders with 1/4" hex socket
• Applications where reduced cam-out and longer bit life are important

Key specifications

• Type: Pozidriv bit (PZ 2)
• Length: 25 mm working length
• Shank: 1/4" (6.35 mm) hexagon, compatible with DIN ISO 1173-D 6.3 holders
• Coating: tip with tiny diamond particles
• Features: torsion zone and BiTorsion zone for peak-load absorption
• Brand: Wera
• MPN: 05056702001
• EAN: 4013288034014

How to use

Insert the 1/4" hex shank into a compatible holder or screwdriver chuck. Select Pozidriv screws matching PZ 2. Apply steady axial pressure while driving to keep the bit engaged in the screw recess; the diamond-particle tip and torsion zones will reduce slipping and absorb load peaks. Inspect the bit tip periodically for wear and replace when the fit in the screw no longer feels secure.

Usage recommendations

Use the bit with the correct Pozidriv screw size (PZ 2) and avoid excessive lateral force. For repetitive high-torque applications, check the bit regularly and replace it when deformation or significant wear appears to maintain safe and reliable performance.