Wera Impaktor holder for the absorption of impulse peaks. Particular torsion effect thanks to the double-torsion spring. The Impaktor holder additionally holds long and heavy screws extremely securely with its ring magnet. This enables rapid and dependable positioning of the screw. Should, situation-related, the magnet not be desired e.g. when working with metal, it can be removed from the screwdriving zone and thereby be neutralised. Used mostly for manual power tool applications. 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.