Capri Tools 32004 Compact Stubby Air Impact Wrench, 1/2 Inch, 450 ft-lbs Powerful, high-speed 1/2 in. drive compact impact wrench with 450 ft. lbs. of maximum torque. Twin hammer mechanism provides optimal balance and minimal vibration Compact short 5.1 in. shank help you maneuver in hard-to-reach areas. Hog ring anvil holds sockets firmly in places Efficient air system dynamics gives you high power with just 4.8 CFM air consumption at 90 PSI 6 settings: 3 forward and 3 reverse Free speed: 11,000 RPM, average air consumption: 4.8 CFM, operating pressure: 90 PSI, air inlet: 1/4 in., recommended hose size: 3/8 in