The California Air Tools 20060CAD Ultra Quiet and Oil-Free Air Compressor is designed to be one of the quietest 6 HP Air compressors in the industry having only 78 dB of sound. The Powerful three 2 HP motors operates at only 1680 RPM creating less noise and less wear. The SP Series of Ultra Quiet Air Compressor Motors have been designed to increase duty cycle and allow for longer continuous run times. The Oil-Free Dual Piston Pump System is engineered for high performance and durability. The 20060CAD air compressor produces 14.60 CFM at 90 PSI and 19.80 CFM at 40 PSI. The CAT-20060CAD Air Compressor has a Oil-Free Dual Piston pump designed to have a life cycle before wear of 3000 Plus hours compared to other comparable air compressors with life cycles of 1500 Hours or less. The Oil-Free pump allows for use in a variety of temperatures (cold starts) and uneven terrains (no oil in the pump). The large 20 Gallon Steel Air Tank is just the right size for shop or garage. Designed for the person looking for Power, Air Flow, and Less Service with at Least 30% Less Noise.