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 all types of work. The tapered torsion zone of the bit effectively handles torque peaks, as it absorbs forces and vibrations during screwing. This allows it to tackle various tasks. It features a 1/4-inch external hex shank for general screw work with screwdrivers and drill drivers. This robust and compact set comes in a transparent storage box, providing both good visibility and secure storage and transport. Length: 25 mm.