Socket wrench screwdriver with hollow shaft from Wera. Hollow shaft for screwdriving with threaded rods, as the hollow shaft takes the threaded rod through the socket bolt. Set equipment particularly suitable for installing and removing mixer taps on washbasins. Multi-component Kraftform handle for high working speeds and particularly ergonomic screwdriving. Kraftform Plus: Hard grip zones for high working speeds, while soft grip zones guarantee high torque transmission. Hexagonal rolling protection prevents it rolling away. With handle markings for easier tool identification. For external hex screws.