Converts AdapterThe pump hose connector fitting is suitable for connecting pool hoses. It is suitable for 38mm pool hose and 32mm pool hose with 2 inch external thread, as is standard filter systemPremium MaterialFor the hose adapter, you will get 2 replacement hose adapters with sleeve ring. These adapters are made of high quality plastic material, long service lifeEasy installationA pipe adapters are designed to connect 1.25" pipes with piston valves or pumps to filter. Small end attaches to 1.25" hose. Threaded end attaches to 1.5" plunger valves or filter pump. Just screw on. No need to buy a filter. 'other hoses and avoid additional costsPrevent water and leakageThe rubber ring is tightly fitted with the 1.25 inch hose to form a sealed gap to prevent leaks. water leaksCompatible withOne Series Adapter.Fits all 4000, 2500, 2000 and 1500 gallon per hour filter pumps that use threaded hose connections