Bosch Square Extra Hard Robertson Screwdriver Bit

This Bosch Extra Hard Robertson screwdriver bit in R1 Square, 25mm length, supplied as a pack of 3, is a practical choice for smaller square-drive screws. The short 25mm length suits work where space is limited. The three-bit pack gives you spares to keep in the toolbox or van. Made from S2 Modified Steel with an optimised heat treatment process, the bit offers extra-hard quality for universal use with screwdrivers and drill drivers. Its tapered torsion zone absorbs force and vibrations, so it copes easily with torque peaks during screw-driving.