Wera 05073990001 Bit Holder 1/4inx75mm

The Wera 897/4 IMP R SB Impaktor Bit Holder with Retaining Ring and Ring Magnet (05073990001) is a heavy-duty, impact-rated bit holder designed for use with power tools and impact drivers in demanding fastening applications.

Engineered with Wera’s Impaktor technology, the holder is designed to absorb extreme impulse peaks generated by modern high-torque impact drivers. This reduces stress on both the bit and the tool, significantly extending service life in intensive professional use.

A key feature is the integrated retaining ring and ring magnet, which securely holds long and heavy screws in place, enabling fast, controlled positioning—especially useful in overhead or one-handed working conditions. The magnet can also be disengaged when working with metal surfaces where magnetic hold is not desired.

The holder is built with a 75 mm length and 1/4" hex drive, making it compatible with standard 1/4" hex bits (DIN ISO 1173-C 6.3) and commonly used impact drivers (DIN ISO 1173-F 6.3). Its robust construction ensures reliable performance under continuous high-torque loads.