Preset Torque Driver is used for torque requirements of the threaded fastener tighten work pieces. The product is a counter clockwise operation, can be preset torque value. Exceeds the set value driver idling, priority control thread fastening. Suitable for precision instruments, screw locking, the circuit board is fixed on the screw locking have higher requirements, the high requirements of the locking accuracy. Widely used in various electrical, light industry, machinery manufacturing, scientific research and other industries.