Bosch Hex Extra Hard Screwdriver Bit Hex 4mm 50mm Pack of 3

This Bosch Hex Extra Hard Screwdriver Bit is sized at Hex 4mm and measures 50mm in length, supplied in a pack of 3. Combining a versatile 4mm hex profile with the extended 50mm length, this variant is an excellent choice for applications requiring that extra reach - ideal for driving into deeper materials, recessed fixings, or situations where clearance around the fastener is limited. Constructed from S2 Modified Steel and enhanced through an optimised heat treatment process, the bit delivers extra-hard quality built to last. The tapered torsion zone runs through the length of the bit, absorbing force and vibrations while handling torque peaks to minimise wear and maintain precision. A 1/4" external hex shank provides a secure, high-torque connection in three-jaw chucks and ¼" internal hex tool holders for use with screwdrivers and drill drivers. Features and Benefits: • S2 Modified Steel with optimised heat treatment for extra-hard durability • Extended 50mm length for improved reach