The Ring-O-Matic 550 HiCFM VacEx Hydroexcavator combines the safe cutting power of high-pressure water with a powerful vacuum suitable for potholing, sewer jetting, sump and catch basin cleaning, HDD job site support and mud management, construction site cleanup and environmental cleanup. It comes standard with a 50 hp CAT diesel engine and 1,000 cfm Gardner Denver positive-displacement blower. The Cyclo-Jet two-in-one pothole excavator attachment can safely dig a 3-foot hole in 30 seconds. 800/544-2518; www.ring-o-matic.com.