The Makita DTW300 18v LXT brushless 1/2" impact wrench is ideal for engineers and mechanics. The impact wrench features a variable speed trigger and an electronic 4 stage impact power selection to suit the application at hand. The trigger switch has a full speed mode allowing you to change the variable speed to full speed mode. The auto-stop system works both in forward and reverse rotation modes. The brushless motor delivers power and efficiency with a max. fastening torque of 330Nm and nut busting torque of 580Nm. Features and Benefits: Brushless motor Electric brake Variable speed trigger Forward/reverse rotation LED job light Electronic 4 stage impact power selection Trigger switch with full speed mode: Variable speed mode can be changed to full speed mode simply by pushing.