THIS IS A SET OF 3 DIFFERENT SIZE DRAIN KINGS FOR 1" 2" 1.5" 3" & 6" PIPE DRAINS UNCLOG ALL SIZE DRAINS. #501 USED FOR BATHROOM, SINKS, POOLS. #186 USED FOR KITCHEN SINKS, BATHTUB, SHOWERS, WASHING MACHINE LINES. #750 MAIN DRAINS, OUTSIDE SEWER DRAINS, BASEMENT DRAINS. NOTE ALL OF THEM MUST BE CONNECTED TO AN ORDINARY GARDEN WATER HOSE