Wera Impaktor holder for the absorption of impulse peaks. Particular torsion effect thanks to the double-torsion spring. The retaining ring ensures an optimum fit of the tool in the holder. The magnet provides for additional fixing of the bit and screw. The Impaktor stainless holder with retaining ring and magnet meets the extremely dynamic demands by doing without any small, mechanical parts that are often susceptible. Used mostly for industrial assembly applications such as e.g. with screwdriving robots. Output: suitable for bits with ¼" hexagon head drive as per DIN ISO 1173-C 6.3. Drive: 1/4" hexagon, suitable for power screwdrivers with take-up as per DIN ISO 1173-F 6.3.