"The superior mechanics and internal mechanisms of the AirCat air ratchet includes high-quality bearing surfaces, air chambers and turbines. The patented exhaust muffler/filter technology reduces the level of noise while retaining more power and torque. A quiet, powerful tool ideal for shop or home applications. Reversible Yes, Case Included No, Drive in. 3/8, Inlet Size in. 1/4, Operating PSI 90, Max. Torque ft.-lbs. 90, Average Air Consumption CFM 3.5, Speed - No Load RPM 180, Tool Weight lbs. 2.88, Variable Speed Yes, Noise Level dB 82."