All the power at half the noise! The superior mechanics and internal mechanisms of the AIRCAT® heavy-duty impact 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. Key Product Specs Drive (in.) 3/4 Average Air Consumption (CFM) 6 CFM at Load 6 Speed - No Load (RPM) 4,500 Max. Torque (ft.-lbs.) 1,330 Working Torque (ft.-lb.) 350-4500 Inlet Size (in.) 3/8 Min. Hose Size (in.) 1/2 Hammer Mechanism Twin Variable Speed Yes Noise Level (dB) 84 Tool Weight (lbs.) 12.1 Additional Product Specs * Twin-hammer clutch mechanism * 90 PSI air pressure