Wera 889/4/1 F Rapidaptor Bit Holder – 1/4″. The free-running feature allows for a particularly quick return movement without having to remove the screwdriver when tightening screws. Especially for application with Wera torque screwdrivers with pistol handle for fast and ergonomic working. The Rapidaptor technology allows mounting bits without activating the sleeve. Remove the bits by simply pushing the sleeve forward – for rapid bit change all with one hand.