Adaptor Wera 870/4

The Wera 870/4 Adaptor provides a compact connection between power tools and hex shank screwdriver bits. With a 25.4 / 4 mm (1/4") hex shank and a 50 mm overall length, this adaptor is intended to reliably couple bits to drills, drivers, and other fastening tools while keeping tool setup compact and accessible. Its lightweight construction at approximately 17 g reduces added weight at the bit end without sacrificing stability.

Advantages

The adaptor combines a standardized 1/4" hex interface with a short 50 mm length to enable secure, low-profile bit engagement. Its slim form factor improves access in confined spaces, and the lightweight design minimizes wobble and user fatigue during repetitive fastening tasks. The construction ensures consistent bit retention and straightforward compatibility with common hex shank bits and quick-change chucks.

Suitable for

• Fastening screws and bolts with 1/4" hex shank screwdriver bits
• Use with cordless drills and right-angle drivers where reduced reach is needed
• Assembly, maintenance and repair tasks in tight or recessed areas
• Production or service environments requiring quick bit changes

Key specifications

• Hex shank size: 25.4 / 4 mm (1/4")
• Overall length: 50 mm
• Weight: approximately 17 g
• Compatible with standard hex shank screwdriver bits and quick-change tool holders

How to use

Insert the hex shank of the desired screwdriver bit into the adaptor until it seats firmly, then secure the adaptor in the tool's chuck or quick-change holder. Ensure the bit is properly engaged and the tool's retention mechanism is locked before applying torque. For removal, release the tool's quick-change mechanism or open the chuck and withdraw the adaptor and bit. Follow the tool manufacturer's instructions for chuck tightening and torque settings.

Usage recommendations

Use the adaptor with bits in good condition to maintain secure engagement. Avoid applying side loads that can bend or stress the adaptor. For high-torque applications, verify compatibility with the driving tool and use appropriate torque settings to prevent premature wear.