Screwdriver Bit Wera BIT 4W1 9506 SB, Phillips sizes 3, 4, 5, 6 × 37 mm, 1 piece

Wera BIT 4W1 9506 SB is a single-piece screwdriver bit designed for Phillips (cross) screws. The tool integrates four Phillips tip sizes — PH3, PH4, PH5 and PH6 — in one 37 mm-long bit body, enabling quick change between common Phillips drive sizes without carrying multiple separate bits. Supplied in blister packaging, the bit is compatible with standard bit holders, ratchet screwdrivers and power drivers that accept 37 mm bits and is intended for fastening and repair tasks across mechanical and maintenance applications.

Advantages

The compact all-in-one design reduces the need to switch individual bits and helps keep a workspace organised. Precision-machined Phillips tips provide consistent engagement with cross-head screws to reduce cam-out and wear. The 37 mm length balances access into shallow recesses with secure seating in bit holders and drivers. The single-piece construction improves durability under repeated use compared with multi-part adapters.

Suitable for

• General mechanical assembly and maintenance where Phillips screws are used
• Repair work on household appliances, electronics enclosures and furniture
• Automotive interior fastenings and light service tasks
• Workshop and professional trades requiring quick access to multiple Phillips sizes

Key specifications

• Tip types: Phillips (cross) — four integrated sizes
• Tip sizes: PH3, PH4, PH5, PH6
• Length: 37 mm
• Configuration: single-piece multi-size bit
• Compatibility: standard 1/4" hex bit holder systems and compatible screwdrivers or power drivers

How to use

Select the required Phillips size by orienting the bit so the appropriate tip aligns with the screw head. Insert the 1/4" hex shank of the bit into a compatible bit holder, ratchet or power driver and ensure it seats securely before applying torque. Use steady, controlled pressure when driving screws to maintain tip engagement and reduce the risk of cam-out. Inspect the tip condition periodically and replace the bit if the tip shows rounding or damage that impairs engagement.

Usage recommendations

For best results, use the Wera BIT 4W1 9506 SB with drivers that provide firm bit retention and adjustable torque control. Match the Phillips size to the screw head to minimise wear. Store the bit in its blister pack or a designated bit organizer to protect the tips and maintain readiness for future tasks.