Screwdriver Bit Wera 855/1 BDC SB

The Wera 855/1 BDC SB screwdriver bit is a precision Pozidriv PZ 2x25 tool designed for reliable fastening work. With a 25 mm overall length and a 1/4" hexagonal shank (25.4 / 4 mm), this bit fits standard bit holders and interchangeable screwdriver systems. The geometry of the PZ tip provides secure engagement with Pozidriv screws, reducing cam-out and improving torque transfer for repeatable, accurate results.

Advantages

The bit's compact 25 mm length suits confined spaces while maintaining control and stability. The hexagonal shank ensures firm seating in chucks and bit holders, promoting safe operation and minimal wobble. Manufactured to Wera's quality standards, the bit is durable and resists wear under normal professional use. The Pozidriv PZ 2 profile gives improved contact area compared with simple cross tips, allowing efficient force application and reduced damage to screw heads.

Suitable for

• Assembly and disassembly of Pozidriv screws in furniture and cabinetry
• Electrical and electronic enclosures where PZ 2 fasteners are used
• Maintenance tasks in workshops and service vehicles
• Tight or recessed fastening locations requiring a short bit

Key specifications

• Tip type: Pozidriv (PZ 2)
• Tip length: 25 mm overall
• Shank: Hexagonal 1/4" (25.4 / 4 mm)
• Material and finish: hardened tool steel with wear-resistant surface (manufacturer standard)
• Compatibility: standard 1/4" bit holders and power screwdriver adapters

How to use

Insert the 1/4" hex shank into a compatible bit holder, magnetic adapter, or screwdriver chuck until it seats securely. Align the Pozidriv PZ 2 tip with the screw head and apply steady axial pressure while turning to prevent slipping. For powered drivers, use controlled speed and appropriate torque settings to avoid over-tightening. After use, store the bit in a holder or bit rack to protect the tip and ensure readiness for subsequent tasks.

Usage recommendations

Use this bit for tasks requiring precise engagement with Pozidriv PZ 2 screws and in situations where a short 25 mm bit improves access. Match tool torque to screw size and material to prevent stripping. Inspect the tip regularly and replace the bit when wear or rounding reduces fit quality.