The NEW & IMPROVED RYDLYME Marine Portable Flushing Kit (PFK1800) provides the basic hardware required to rid various cooling systems in your watercraft of marine fouling like calcium, lime, rust, barnacles and muscles. Each kit includes a 30 GPM/14' head pressure submersible pump, (2) 6-foot hoses, (1) clamp & (2) 1/2" and (2) 3/4" hose barb fittings to attach pump to equipment and back to the included 5 gallon bucket. The PFK 1800 also includes (1) gallon of RYDLYME Marine Biodegradable Descaler!