440P is the ultimate portable compressor kit. It can inflate a 37-inch tire from 0 to 30 PSI in less than 5 minutes. The 440P is the largest and most powerful portable compressor kit available today. Rock crawlers and semi-truckers alike will find the power of this unit irreplaceable. VIAIR 440P portable compressors are shipped complete with an open-ended (free-flowing) air delivery hose with a quick-connect coupling, a pressure gauge, an air filter element with replaceable air filtration media, a vibration-resistant sand tray, inflation tips and a deluxe carry bag for simple stowage and increased portability.