FEATURES: Pump and Hose are no longer needed. To do precise bolting process, It only requires power supply of 220-240, 50-60Hz. Continuous rotation without impact. When reaching the set torque, it will stop automatically. More functional than hydraulic wrenches by intermittent drive. Single chip intelligent torque control system,with fault self checking functionand power off memory function. Accuracy: +/-5% Two ways of Torque setting -Set the torque manually.System recommends torque as per bolt