TRI AXLE PORTABLE COMPRESSOR, CAT C15 475 HP ACERT ENGINE, 1600 cfm, TWIN SCREW, 8" CLOSED START INLET VALVE, w/ ONE 3" SERVICE CONNECTION, ETHER STARTING AID, AUTOMATIC SHUTDOWN AND PROTECTION SYSTEM, LARGE SERVICE DOORS FOR EASY MAINTENANCE, AUTOMATIC BLOWBY VALVE, 305 ORIGINAL HOURS. NOTE: NEEDS CLEANING PLUS PAINTING WOULD MAKE IT LOOK LIKE NEW, TIRES NEED TO BE REPLACED (DRY ROTTED FROM BEING STORED SO LONG) TIRE SIZE 8-14.5