For precision tightening (left or right-handed thread) and for loosening bolts or nuts.

Inversion is made by inverting the toothed wheel on head of tool.

Adjustment of the tightening torque is made by turning the pivoting handle.

When the tightening torque is reached, the torque device trips at the optimum limit and resets automatically.

Each tool is marked with a serial number for traceability and delivered with a calibration certificate.