Schroefbitset Bosch 3-delig, extra hard, Hex 4 mm, lengte 49 mm, 1/4" schacht

Bosch extra hard screwdriver bit set, 3 pieces, each with a 4 mm hex tip and 49 mm length. Bits have a 1/4" shank compatible with standard bit holders and quick-change chucks. The set is intended for durable fastening tasks and frequent use in household and professional applications; the tapered torsion zone absorbs torque peaks to handle demanding fastening jobs.

Advantages

The extra hard material increases wear resistance and extends service life under repeated use. A tapered torsion zone reduces the risk of bit breakage by absorbing sudden torque peaks. Standard 1/4" shank ensures compatibility with a wide range of drivers and holders.

Suitable for

Key specifications

How to use

Select a 4 mm hex bit from the set and insert the 1/4" shank into a compatible bit holder, quick-change chuck, or screwdriver. Position the hex tip into the fastener head and apply steady pressure while turning the driver at appropriate speed and torque for the material and screw size. Replace the bit if wear or deformation is visible.

Recommendations

Use with the correct torque settings and avoid side forces to maximise bit life. Store bits in the original blister or a suitable holder to prevent damage and loss.