The M18™ FUEL™ 1/2 in high torque impact wrench with friction ring kit features the most powerful cordless wrench in its class, delivering up to 700 ft-lb of maximum fastening torque, 1100 ft-lb of nut-busting torque and up to 2X more runtime the POWERSTATE™ brushless motor outperforms competitors with constant power output and the Milwaukee® designed impact mechanism delivers up to 700 ft-lb of maximum fastening torque. The REDLITHIUM™ XC5 extended capacity battery pack (not included) delivers more work per charge and more work Over pack life than Any other battery. It features an onboard fuel gauge to help you monitor the charge more accurately, so there's less downtime on the job. REDLINK™ Plus™ intelligence allows the operator to choose between 2 fastening modes with Milwaukee® proprietary DRIVE CONTROL™ feature and ensures maximum performance and protection from overload, overheating and over-discharge. This 18 V Lithium-Ion FUEL™ high torque impact wrench offers quick, tool-free socket changes with a 1/2 in friction ring anvil. You'll get ultimate comfort during extended use with the new contoured soft-grip.