Home » 1″ Air Impact Wrench Short Shank 1″ Air Impact Wrench Short Shank Specifications Max Torque: 1,200ft/lb Free Speed: 3,800rpm Air Consumption: 12 CFM Air inlet: 1/2" NPT Hose Size: 1/2" Bolt Capacity: 1-5/8" Item Number: TAR492-81