Bernstein Torqueplus Torque Adaptor, 4-974, 0.4 Nm

With this torque adaptor, you can turn your normal bit screwdriver into a torque screwdriver. Torque: 0.4 Nm of torque adaptor suitable for almost all types of 4 mm bits and handles with a 4 mm hexagonal socket. When the torque is reached, a clicking sound is heard so that unwanted over-tightening is not possible. The limit of the loosening torque is larger than the tightening torque to protect both the tool and the screw from damage. Precise and accurate, for 20,000 clicks.