The DEWALT 18V Brushless XR High Torque Wrench Driver is a powerful heavy duty yet ultra-compact tool. The brushless motor has been designed to run cooler & more efficiently enabling for more power to be delivered during application resulting in less wear & an increase in longevity of the tool. The high power brushless motor has a max torque of up to 447 Nm & breakaway of up to 813 Nm which ensures heavier tasks are completed quickly.