Packed with power and speed, this heavy-duty air impact wrench is the right tool for general automotive service, body shop, farm and light truckwork.Low air consumption and high torque make this tool the most efficient in its class.Drive1/2inAverage Air Consumption 4.75CFMCFM at Load19Speed - No Load 6,900RPMMax.Torque 550ft.-lbsWorking Torque 25 - 400ft.-lbInlet Size1/4Min.Hose Size 3/8inVariable SpeedYes* Patented clutchfor smooth operationandextreme durability *Ergonomic grip and trigger for comfort and control