This Wera 028160 is a high-quality Kraftform Nutspinner Flexshaft Bit Holder with a flexible shaft. It has a multi-component Kraftform handle for high working speeds and particularly ergonomic screwdriving. The Kraftform Plus: hard gripping zones make it suitable for high working speeds whereas the soft zones ensure high torque transfer. It comes with a quick-release chuck for rapid bit change and has a hexagonal anti-roll feature preventing any rolling away. It is suitable for the insertion of bits with inch hexagon head drive as per DIN ISO 1173-C 6.3. Specifications: Tip Size: 1/4in. Blade Length: 177mm. Handle Length: 98mm.