This Rugged Iron Horse Twin Stack compressor with cast iron cylinder comes with a 4 gallon air tank capacity the provides an industry leading 5.1 CFMs @ 90 PSI. The unit is oil lubricated for professional use and extended life and is powered by a thermally protected 1 hp, 115 volt, induction motor which is CSA/US approved. The regulator, gauge and quick coupler connections round off this unit and are very conveniently found and easy to access on the front mounted control panel. This Bonus feature unit also includes a 25 foot air hose and 20 piece air accessory kit.