Bit holder Wera 887/4 RR — ring magnet, 57 mm length, 1/4" drive

The Wera Ring Magnet Bit Holder 887/4 RR is a 57 mm long 1/4" drive bit holder with an integrated ring magnet that secures standard 1/4" bits during screwdriving operations. Its compact length makes it well-suited for use in confined spaces and recessed fasteners, while compatibility with 1/4" chucks and quick-change systems ensures broad usability with manual screwdrivers and power tools. The design focuses on reliable bit retention and straightforward bit insertion and removal, supporting efficient assembly and maintenance tasks.

Advantages

The ring magnet provides consistent magnetic retention around the bit, minimizing drops and improving positional accuracy when guiding screws. At 57 mm length the holder balances reach and control, allowing access to tight or recessed fasteners without excessive flex. The 1/4" drive interface is compatible with common bits and tool systems, enabling quick switching between bits and reducing downtime. Materials and construction are designed for repeated use and stable performance in typical workshop and on-site environments.

Suitable for

• Assembly lines and manual fastening work
• Maintenance and repair tasks in confined or recessed areas
• Use with screwdrivers, quick-change holders, and 1/4" chucks
• Situations where magnetic bit retention reduces drops and speeds operation

Key specifications

• Overall length: 57 mm
• Drive size: 1/4" (6.35 mm)
• Retention: integrated ring magnet for bit holding
• Compatible bit type: standard 1/4" hex bits
• Intended use: manual and powered screwdriving applications

How to use

Insert a standard 1/4" hex bit into the holder until it seats against the stop; the ring magnet will retain the bit and help hold screws on the tip during positioning. Attach the holder to a compatible 1/4" chuck, quick-change adapter, or screwdriver shank as required. Use steady, aligned pressure when driving screws to avoid cam-out; remove the bit by pulling it straight out from the holder. For recessed or tight screw locations, use the holder’s length to position the bit while maintaining tool control.

Usage recommendations

Use appropriate torque settings on powered drivers to prevent overloading the bit-holder interface. Keep the bit holder and bits clean of debris and metal shavings to maintain magnetic contact. Replace worn or deformed bits to ensure secure seating and reliable retention by the ring magnet.