The Ring-O-Matic 550 dual-pump combination sewer line jetter and vacuum excavator provides the advantages of a dedicated combination jet/vac truck in a versatile, compact trailer unit. It can vacuum sewer lines up to 20 inches in diameter in spaces too confined for stand-alone jetters and vacuum excavators, or a carrier-mounted combo rig. Powered by an 81 hp CAT turbo diesel, the machine has a 1,000 cfm blower and can deliver 27 gpm at 2,700 psi up to 400 feet with its 3/4-inch jetter hose. Its trailer axles are rated to 16,000 pounds, allowing the 550-gallon spoils tank and 500-gallon freshwater tank to be easily pulled behind a 3/4- or 1-ton truck. 800/544-2518; www.ring-o-matic.com.