Rol-Air 4090HK17 portable engine-drive air compressor. This portable gas-drive air compressor is ideal for contractors, or using anywhere electrical power is not available. It features a cast-iron single-stage pump powered by a 5.5 hp GX Series Honda motor. It is mounted on twin-tanks with a 9 gallon capacity. The splash-lubricated single-stage pump has cast-iron cylinders for longer life, automotive-style connecting rod inserts, ball main bearings, an oversized flywheel, extended aftercooler, idle-down throttle control, and an oil sight glass. It also features a totally enclosed belt guard, intake filter silencer with replaceable element, ASME approved safety relief valve, and pressure gauge. This unit produces 8.9cfm @ 100psi. Shipping weight is 205 lb.