The Martins Industries Impulse 1/2" Cordless Impact Wrench, No. MX-P1, features a maximum breakaway torque of 796.6 ft-lbs for a maximum speed of up to 2,400, 1,900, and 1,500 rpms. The MX-P1 utilizes a forward/reverse button and a three-speed push button switch to easily increase speeds for optimal mounting. It has a built-in LED worklight and an ergonomic handle for comfort. With a brushless motor, the impact wrench provides ideal performance with less maintenance. The tool is operated by a 21V - 4000 mAh Li-ion battery and comes with a charger and an additional battery.