The ROLAIR® 5-HP (230V), 18.8CFM@90PSI, 9 Gall Twin Tank Constant-Run Compressor is a high-quality unit designed to power a variety of high-pressure pneumatic tools. This Rolair compressor outputs superior power, producing 18.8 cubic-feet-per-minute (CFM) at 90 pounds-per-square-inch (PSI). The 5-horsepower motor operates at 1740 rotations-per-minute and has overload protection to ensure its longevity. Due to its high output, this 5-HP compressor is designed for constant-run operation to further protect the motor. This unit operates with a two-stage pump that is designed to be fuel-efficient. An air-cooled aftercooler, in conjunction with multi-finned intercoolers, prevent overheating of this constant run compressor. You can monitor your oil levels with a quick glance at the built-in glass fuel gauge. This is a wheeled compressor designed with two wheels and wheelbarrow handles that allow for convenient portability. Durability is ensured with quality steel based construction.