Rol-Air 11GR30HK30 engine-drive air compressor. This air compressor is ideal for mounting on a service truck for mobile service work, or using anywhere electrical power is not available. It features a cast-iron 2-stage pump powered by a 11 hp Honda motor with electric start, and is mounted on a 30 gallon ASME tank. The pump has cast-iron cylinders with aluminum heads & crankcase (for fast heat dissipation), brass connecting rod inserts, ball main bearings, a balanced steel flywheel, deep-finned extended aftercoolers, 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 17.01cfm @ 175psi. Shipping weight is 365 lb.