Bosch Hex Extra Hard Screwdriver Bit

The Bosch Extra Hard Screwdriver Bit in Hex 4mm, 25mm length, is supplied as a pack of 3. It is a practical mid-range size for general hex socket screw-driving. S2 Modified Steel and an optimised heat treatment process provide extra-hard quality, enabling dependable performance across many tasks. The 25mm length makes the bit easy to control with a screwdriver or drill driver. The tapered torsion zone absorbs force and vibrations, so it copes easily with torque peaks. A ¼-inch external hex shank gives a secure fit in compatible tool holders.