"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. Tool Length in. 6 1/5, Min. Hose Size in. 3/8, Max. Torque ft.-lbs. 320, Noise Level dB 87, Average Air Consumption CFM 2.93, Drive in. 3/8, Case Included No, Variable Speed 3 Forward, 1 Reverse, Inlet Size in. 1/4, Standard Bolt Capacity in. 3/8, Working Torque ft.-lb. 70-270, Tool Weight lbs. 2.7, Reversible Yes, CFM at Load 3.10, Speed - No Load RPM 9,000, Hammer Mechanism Twin. 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"