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