This Bosch Hex Extra Hard Screwdriver Bit is sized at Hex 3mm and measures 25mm in length, supplied in a pack of 3. The 3mm hex size is a highly versatile profile suitable for a wide array of everyday fastening tasks, while the 25mm length is the go-to choice for standard-depth applications and general-purpose screw-driving. Built from S2 Modified Steel with an optimised heat treatment process, the bit reaches an extra-hard quality that resists wear even under sustained use. The tapered torsion zone works to absorb force and vibrations during driving, coping comfortably with torque peaks to protect the bit and the screw head. The 1/4" external hex shank locks securely into three-jaw chucks and ¼" internal hex tool holders, ensuring broad compatibility with screwdrivers and drill drivers. Features and Benefits: • S2 Modified Steel with optimised heat treatment for extra-hard durability • Tapered torsion zone absorbs force, vibrations and torque peaks • 1/4" external hex shank for strong connection and maximum torque transmission • Compatible with three-jaw chucks and ¼" internal hex tool holders Specifications: Hex Size: 3mm Length: 25mm Pack Quantity: 3 Contents: • Pack of 3