Brushless motor is electronically controlled,phosphorus coated battery fuel gaugethe motor eliminates carbon brushesto optimize battery energy use for up to 50% longer run time per charge.The brushless motor does not generate sparks when it is working, and the motor does not wear. Included adaptor and the sockets makes it also a impact screwdriver, multi-purpose, super power, high strength impact grade sockets withstand more torque from impact tools and insure longevity. A cordless impact wrench,convenient 1/2" square drive for quick socket changes, 6PCS driver impact sockets, 21V Max Lithium-ion battery, charger. Switch trigger control L-speed mode,M-speed mode,H-speed mode and Dri au-to stop mode,precise fastening for various application. Come with a customized heavy duty case for portability, easily to carry,All parts have to be protected agai t damage.Suitable for construction site shelves, maintenance, woodworking, etc. Suitable for construction site shelves, maintenance, woodworking, etc. Features? -520N.M high torque, steeples speed change switch. -Powerful electric wrench, multi-purpose, super power. -Tungsten steel shaft, high hardness and wear resistance. -The brushless motor does not generate sparks when it is working, and the motor does not wear. -Forward & Reverse rotationdisassembly & installation all-in-one. -Switch trigger control L-speed mode,M-speed mode,H-speed mode and Dri au-to stop mode,precise fastening for various application. -Brushless motor is electronically controlled,phosphorus coated battery fuel gaugethe motor eliminates carbon brushesto optimize battery energy use for up to 50% longer run time per charge Specifications? Color: black + blue Rated input power: 1280 (w) Type: Impact wrench Screw diameter: 22 Maximum torque: 520 (Nm) Power Type: Rechargeable - Lithium Technology Power supply voltage: 220V Torque range: 0-520 (n.m) Number of revolutions: 3000 (rpm) Handle type: Hand-held Maximum size of mounting screws 0-28(mm) Square head nominal size: 12.7 (mm) Impact number: 0-3300 (ipm) drive shaft / chuck drive Tightening capacity _ standard bolt: 0-28 Tightening ability _ high strength bolt: 10-16 Package include? 1x Impact Wrench Body 2x 3.0Ah Lithium-Ion Battery 1x Battery Charge(AU Plug) 2x Conversion Adapter 6x Socket(14mm 17mm 18mm 19mm 21mm 22mm) 1x Belt 1x Drill Bit 1x Sealing Ring 1x Sealing Pin 1x Screwdriver Bit 1xCarrying case