Wera 05028160001 | Bit-Holding Screwdriver With Flexible Shaft392 Bitholding screwdriver with flexible shaft, 1 4" x 177 mm Bitholding Screwdrivers and Adaptors High quality bit holder with flexible shaft by Wera. Multi component Kraftform handle for high working speeds and particularly ergonomic screwdriving. Kraftform Plus: hard gripping zones for high working speeds whereas soft zones ensure high torque transfer. Comes with quick release chuck for rapid bit change and hexagonal anti roll feature that prevents