The Makita DTW300 18V LXT brushless 1/2 Inch 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 being carried out. 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. Features: Electric brake Variable speed control by trigger Forward / reverse rotation LED job light Brushless motor 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 a button. Because in full speed mode the trigger travel is shorter , the full speed is reached faster Auto-stop system available both in forward/reverse rotation modes Comes with: 2 x BL1850B 5.0Ah Batteries 1 x DC18RC Charger Impact Socket Canvas Bag Specification: Driving Shank: ½” Square Drive Standard Bolt: M10 – M20 High Strength Bolt: M10 – M16 Impact Power Selection: Max, Hi, Med, Soft Impacts per Minute: 0 - 4,000/ 3,400/ 2,600/ 1,800 ipm No Load Speed: 0 - 3,200/ 2,600/ 1,800/ 1,000 rpm Max Fastening Torque: 330 Nm Nut Busting Torque: 580Nm Net Weight: 1.5 – 1.8kg Vibration: 12.5m/s² Vibration K Factor: 1.5m/s² Sound Pressure Level: 97 dB(A) Sound Power Level: 108 dB(A) Sound K Factor: 3 dB(A)