This plunger valve set is a one-step solution to on-the-stop, instant filter pump or filter cartridge changes. It can efficiently and conveniently stop the flow of your pool. This plunger set is to be used with the above ground pools using 38 mm diameter hoses with 59 mm threaded connector fittings. With this pool plunger set, you can spend more time swimming and less time maintaining. The plunger valve is both compatible with Bestway and Intex pools with the same size of outlet/inlet connection.