897/4 Impaktor R TriTorsion Magnetic Impact Screwdriver Bit Holder - 

This Impaktor 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. The powerful ring magnet securely holds large and heavy screws, meaning that there is no need to hold the screw when using the tool, great for overhead working situations and working in confined spaces. If the magnet function is not required in a certain situation i.e. when working with metal, you can extract the magnet from the screwdriving area.