Get the toughest job done with this powerful 1/2" cordless high-torque impact wrench. A maximum breakaway torque of up to 797 ft lb , making it ideal for many heavy-duty impact wrench applications. Utilize the 3-speed push button switch to easily increase speeds for optimal mounting. Designed with a built-in LED light for optimal brightness. Increased performance and less maintenance with its brushless motor. Operated by a 21V - 4000 mAh lithium-ion battery and comes with a charger and an additional battery.