The M18 cordless 1/2 in. high torque impact wrench provide industry leading power in a compact size. Built with a Milwaukee 4-pole motor and a powerful impact mechanism, the 2662-22 and 2663-22 deliver 450 ft-lbs of torque. A variable speed trigger provides speed control between 0 to 1900 RPM & 0-2200 ipm. The 2663-22 has a 1/2 in. anvil with friction ring for quick and easy one-handed socket changes.