Chicago Pneumatic 826T 3/8" Air Ratchet 15 FT LBS. Std. Bolt size: 1/4", Avg. Air Consumption: 2.5 CFM, Air Inlet NPTF: 1/4", Min. Hose Size: 1/4", Sound dBA Pressure: 87 - 97, Power Vibration: M/S2 4.5, Speed: 250 RPM, Working Torque Range: 5-15 ft. New improved head design - reduces premature wear and eliminates slips. Urethane grip offers unmatched comfort and a non-slip feel.