"The Klutch Air Impact Wrench delivers the power, performance and torque to tackle just about any jobs you come across. Twin hammer clutch mechanism and tough, lightweight composite housing for top performance and ease of use on the job. Cold forged striking hammer increases torque output and extends tool's life. Case Included No, CFM at Load 3.10, Drive in. 3/8, Hammer Mechanism Twin, Average Air Consumption CFM 2.93, Min. Hose Size in. 3/8, Variable Speed 3 Forward, 1 Reverse, Working Torque ft.-lb. 70-270, Standard Bolt Capacity in. 3/8, Tool Length in. 6 1/5, Noise Level dB 87, Reversible Yes, Speed - No Load RPM 9,000, Inlet Size in. 1/4, Max. Torque ft.-lbs. 320, Tool Weight lbs. 2.7. Composite housing for light weight and strength Twin hammer clutch 9000 RPM free speed Produces 320 ft.-lbs. max. torque Cold forged striking hammer increases torque and extends tool life 2.93 CFM average air consumption Forward/reverse power regulator 87dB noise level 1/4' inlet 3/8' hose"