Bit holder Wera 899/4/1 — stainless steel, 1/4" hex shank, 50 mm length, 4 mm shank size

Wera 899/4/1 stainless steel bit holder is a compact accessory for holding 1/4" hex screwdriver bits. With a 50 mm overall length and a 1/4" (4 mm) hex shank, the holder is designed to fit both hand tools and power drivers that accept DIN ISO 1173-C 6.3 or DIN ISO 1173-F 6.3 interfaces. The stainless steel sleeve provides enhanced corrosion resistance while the integrated retaining ring and strong permanent magnet keep bits seated securely during assembly, repair and maintenance tasks.

Advantages

The stainless steel construction offers very good corrosion protection compared with standard holders. A retaining ring ensures a precise mechanical fit of the tool in the holder, reducing wobble and improving control. The powerful permanent magnet holds bits firmly in place to prevent accidental detachment during work. Compact dimensions and a lightweight design make the holder convenient for use in confined spaces and for extended tool sets.

Suitable for (tasks / use cases)

• General assembly and disassembly of mechanical and electrical components
• Maintenance and repair work in workshops and field service
• Use with power screwdrivers and cordless drivers that accept 1/4" hex shanks
• Tight or confined work areas where a short, robust bit holder is needed

Key specifications

• Material: stainless steel sleeve with magnetic bit retention
• Shank type: 1/4" (4 mm) hexagon
• Overall length: 50 mm
• Diameter: 10.5 mm
• Weight: 19 g

How to use

Insert a compatible 1/4" hex screwdriver bit into the holder until it seats against the retaining ring and is attracted by the magnet. Fit the holder into the chuck or quick-change adapter of a hand or power driver that accepts the 1/4" hex shank. Apply steady axial pressure when engaging screws to maintain bit seating; replace bits by pulling them straight out of the holder. Inspect the sleeve and magnetic retention periodically for wear or contamination.

Usage recommendations

For best performance, use bits that conform to standard 1/4" hex dimensions and keep the magnetic surface and retaining ring free of metal shavings and dirt. Avoid exposing the stainless steel sleeve to strong acids or chlorides for prolonged periods to preserve corrosion resistance. When working at high torque, ensure the bit and holder are rated for the applied load and replace worn components.