Get the most powerful, most compact, longest-running Impact Wrench in its class. The M18 cordless Lithium-Ion 1/2 in high-torque impact wrench features a Milwaukee four-pole motor and powerful impact mechanism to deliver a reliable 450 ft-lb of torque with maximum run time. The REDLITHIUM extended capacity battery pack delivers more work per charge and more work over pack life than the competitors, as well as best-in-class performance in extreme jobsite conditions. You'll get consistent speed control between 0 to 1900 rpm and 0 to 2200 ipm with the variable-speed trigger. A 1/2 in anvil with friction ring allows quick and easy one-handed socket changes. The M18 impact wrench's onboard, real-time battery fuel gauge helps you monitor the charge precisely, so there's less downtime on the job. Lightweight and portable, with superior ergonomics, this 18 V cordless power tool offers ultimate comfort during prolonged use.