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 conical torsion zone of the bit effectively handles torque peaks by absorbing forces and vibrations during screwing. This allows it to tackle a variety of tasks. It features a 1/4-inch external hex shank for general screwing work with screwdrivers and drill drivers. Size: T25, Length: 25 mm.