The Porter Cable 30 Gallon Portable Air Compressor features a cast iron, V-twin cylinder, oil-lubricated pump with a 1-piece cast iron crankcase, thermally stable cast iron cylinder body, aluminum head and machined cast iron valve plate, automotive style ball bearings, durable stainless steel reed valves, oil level sight glass, easily accessible oil fill and 10 in. cast iron balanced flywheel. It features a heavy-duty induction motor for maximum performance and efficiency. A 30-gallon ASME portable tank equipped with pneumatic tires offers maximum portability to jobsites.