Drain King® 750 Professional Drain Opener for 3" to 6" Pipe DiameterFor use in main drains, basement drains, outside deck drains and outside sewer drains. Water dispersing valve turns water into pulsating jets to clear a drain up to 1,000 ft. Works with standard water pressure (50 80 PSI). Replaces the use of possible caustic and poisonous chemicals. 3" to 6" diameter Attaches to garden hose Environmentally safe Safe & easy to use over & over again Water dispersing valve turns water into pulsating jets to clear a