Description: square anvil automatic impact wrench allows you to tighten or loosen various nuts and bolts of car and scaffolding, widely used for daily or heavy-duty applications indoor or outdoor * Built-in brushless motor, enables this tool to run cooler and more efficiently, optimizes battery energy use for up to 50% longer run time per charge * It delivers up to 29,20 in.lbs of max torque with 2 speeds (0-1,500 RPM Max & 0-2,800 IPM Max) * Powerful electric wrench, multi-purpose, super power * Tungsten steel shaft, high hardness and wear resistance * Combined with socket, chuck or bit accessories, it can convert to an electric wrench, electric drill or electric screwdriver respectively * Suitable for construction site shelves, maintenance, woodworking, and so on Features: 1) 2-Speed Selections:1st Speed: 0-1000 RPM, 0-1500 IPM, 180 NM/1593 IN.LBS; 2) 2rd Speed: 0-2200 RPM, 0-2800 IPM, 520 NM/4602 IN.LBS; 3) Forward/reverse Mode: Turn left/right of the rhombus button to be forward/reverse modewhich helps you fasten or loosen the screws easily. 4) Autostop Mode: If you turn on the Autostop button, it will stop rotating after working a few seconds even if you keep pressing the trigger. Release and press the trigger again, then it will work again, to avoid the nuts falling off. Note: Only for Reverse Mode 5) Motor Type: Brushless 6) 520N.M high torque, stepless speed change switch. 7) Powerful electric wrench, multi-purpose, super power. 8) Tungsten steel shaft, high hardness and wear resistance. 9) Suitable for construction site shelves, maintenance, woodworking, etc. Specification: All-metal gear construction for longer life and durability, rubberized grip for added comfort and reduced fatigue Continuously Variable Transmission The speed is controlled by the force of pressing the button and the shift is smoother The 10.0Ah batteries are rechargeable which could last for a long time. Disassembly, installation, drilling, 3 in 1 *High quality motor, small volume, heavy torque-8800NM *Tungsten carbide steel shaft, a