This extra hard screwdriver bit is a great choice for general tasks. S2-modified steel and an optimized heat treatment process provide above-average hardness for adequate performance in all types of work. The conical torsion zone of the bit effectively handles torque peaks, as it absorbs forces and vibrations during screwing. This makes it suitable for all kinds of jobs. 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 storage box, allowing for good visibility as well as safe storage and transport. Length mm: 49.