NozAll pumpout adapter will make emptying your holding tank as clean, easy and fast as making a trip to the gas station. Made of heavy duty glass filled nylon Cone shaped design matches exactly with the cone shape of black rubber nozzles found at most pump out stations Provides an airtight seal between boat deck waste fitting and the pumpout station nozzle Plastic Adapter screws into deck fitting for a clean connection 1-12 Adapter 1 78 Thread O.D. California Residents WARNING Cancer and Reprodu