This pack of 15 Pozidrive PZ2 Impaktor bits 25mm long should be used with 897 4 IMP Holder for maximum service life. Part of the Impaktor Tri Torsion system (bits & holder), Impaktor bits are designed for use in all heavy duty machines, but specifically Impact Drivers. Thanks to a best-possible utilisation of the material properties & optimally designed geometry added to the rough diamond coating reducing the danger of any damaging cam-out of the screw head, Impaktor will dramatically extend bit service life. The Take it easy Tool finder is Wera's new fast selection system based on coloured band coding for screw profiles (black = Pozidriv; red = Phillips etc.) with clear size markings. The Bit-Box slide switch allows simple & gradual removal & reinsertion of the bits. The transparent reverse side provides an easy contents check.