Screwdriver bit set Wera 851/1 TZ SB — Phillips PH1, PH2, PH3; 2 pcs; 1/4" hex shank 25.4/4 mm

Wera 851/1 TZ SB is a compact set of high-quality Phillips screwdriver bits designed for common fastening tasks. The set provides durable cross-head tips in popular sizes and a 1/4" hexagonal shank that fits standard bit holders, screwdrivers with bit holders and many cordless drivers. The bits are lightweight and convenient to carry in a toolkit or pocket, making them suitable for both workshop and on-site use.

Advantages

The bits are manufactured with attention to tip geometry and hardness to ensure secure engagement with Phillips screws and reduced cam-out. The 1/4" hex shank enables quick insertion and firm locking in bit holders and magnetic chucks. Compact packaging and low weight improve portability while corrosion-resistant surface treatment extends service life under normal working conditions.

Suitable for

• Assembly and disassembly of furniture and fixtures
• Electronics and appliance maintenance where Phillips screws are used
• General repair and maintenance tasks in workshops and construction sites

Key specifications

• Tip type: Phillips (PH)
• Included tip sizes: PH1, PH2, PH3 (set contains two pieces as supplied)
• Shank: 1/4" (hexagonal)
• Bit length: 25 mm (nominal)
• Material and finish: hardened steel with protective surface treatment

How to use

Choose the Phillips bit size that matches the screw head to avoid stripping. Insert the 1/4" hex shank into a compatible bit holder, screwdriver handle or a drill/driver with a bit adapter until it locks. Apply steady axial pressure and rotate at appropriate torque or speed for the screw and material being worked on. Replace bits when tip wear impairs secure engagement with screw heads.

Usage recommendations

Use the correct Phillips size for each screw and avoid excessive torque to reduce wear and cam-out. Store bits in a dry place and inspect tips before use; replace damaged or rounded bits to maintain fastening quality.