There’s no need for a pump and hose anymore; achieving accurate bolting now simply requires source of energy for 220, 240v 50, 60hz, Continuous rotation without impact. Upon arriving at the it will, Setted torque stop automatically. More functional than hydraulic wrench by intermittent drive, Single, Chip intelligent power with fault, Management mechanism self, Checking function and power, Off memory function. Accuracy 5%, Two ways of torque setting set the torque manully, System recommends torque as per bolt parameters, Human, Computer interface. Torque value is shown directly on lcd display. Torque table is not needed, Double anti, Overload protection. Electronic system against over, Tighten and the clutch against overload, They can protect driving components effectively.