Intex conversion kit fitting. One end has threads (usually for connecting a 1 1/2 inch threaded end hose). The other end compresses onto a fitting by twisting the grey adjustment ring. Thereby squeezing down to make an air tight seal on the fitting. Two(2) Intex Large Pool Plunger Valve Assembly (Stepped Washers/Gaskets not included) Requires an Intex Pool with 1.5"" hose fittings to work properly. Replace your old Intex plunger valves or upgrade to the Intex Plunger Valve system, makes changing hoses and pumps a breeze Works with the Intex 1500, 2500, 4000 gallon per hour filtration pumps, Sand Filters as well as the Intex Saltwater Chlorinator and Intex 2000 gallon per hour Chlorinator Pump Combo