This extra hard screwdriver bit is a great choice for general tasks. S2-modified steel and an optimized heat treatment process result in above-average hardness for adequate performance in various jobs. The tapered torsion zone of the bit effectively handles torque peaks, as it absorbs forces and vibrations during screwing. This allows it to tackle all kinds of work. It features a 1/4 inch external hex shank for general screwing tasks with screwdrivers and drill drivers. This robust and compact set comes in a transparent dust box, providing both good visibility and secure storage and transport. Length mm: 25.