K'auml;rcher, the world's largest manufacturer of pressure washers, has introduced a commercial line of cold-water pressure washers using a hand-truck design for easy maneuvering.The four models deliver cleaning power of up to 3,600 PSI (pounds per square inch) of pressure with a flow rate of up to 4 GPM (gallons per minute). All come with K'auml;rcher's patented, professional-grade axial pump integrated with a Honda engine.The line of hand-truck pressure washers feature a rugged steel frame, tubed-pneumatic tires and 50 feet of commercial-grade high-pressure hose. Two models, with 9 and 13 HP engines, come standard with an easy-wind hose reel.