1/4" x 75mm Stainless Steel Impaktor Impact Screwdriver Bit Holder with Retaining Ring and Magnet - 897/4 - 

Wera 897/4 IMP Impaktor bit holder with retaining ring and magnet. This Impaktor stainless steel holder with retaining ring and magnet is designed to meet the extreme requirements when working with impact screwdrivers. The combination of a double torsion zone in the Impaktor holder and a torsion zone in the Impaktor bit results in a TriTorsion system. The TriTorsion system is designed to absorb impact forces and thereby protects the bit tip, greatly enhancing the service life of the bit. Retaining ring creates a secure fit of the bit in the holder, while the magnet secures positioning of the bit and the screw.