Main Features:  Good for construction site shelves, maintenance, woodworking, etc.  LED Working Light. Providing increased visibility indark or confined spaces to work.  Forward, Reverse and Lock Control. One key switch to meet different tasks.  Brushless and Pure Copper Motor. Delivers a massive torque of 320NM with speeds up to 3000rpm.  3.0 Ah(10X1500mah-Cell) Removable Battery. Working time can extend with high capacity battery.  Rubber Handle. Effectively alleviates hand fatique caused by reqular use.  Multiple Cooling Holes. Maintain a low operating temp, even if you use it for a long time.     Specification:  Name: Topshak TS-PW1 Brushless Impact Wrench.  Voltage: DC 18V.  No-load speed: 0-3000rpm.  Battery capacity: 3.0 Ah(10X1500mah-Cell).  Standard bolt: M10- -M20(3/8''-3/4'').  High tensile bolt: M10-M16(3/8'-5/8').  Square drive bolt: 12.7mm(1/2').  Charger input: AC 100-240V.  Charging time: 1.5-2.5h.  Size: 246x148x70mm.  Net weight: 1.61kg.     Package Contents:  1x Topshak TS-PW1 Brushless Impact Wrench.  1x Battery.  1x EU Plug Charger.  1X English Manual