1[Threaded to Clamp Hose Adapter] These adapters feature 2.25 inch inner diameter threaded collar for connecting NPT hose connectors to clamp style hoses. 2[Reliable Connection] This pool hose adapter kit is perfect for older hoses without adapters, also come with washers for a more waterproof connection. 3[Wide Application] Suitable for pool set with 1.5 and 1.25 inch hose, as well as 4000, 2500, 2000, and 1500 GPH filtration pumps, ensuring versatile compatibility for various pool systems. 4[Versatile Use] The adapter is also suitable for Cl generators and salt systems, with standard size for Cl generator, feeders and salt cell systems, allowing you to utilize existing hoses. 5[Secure Connection] The PVC construction of the hose adapters ensures a reliable connection, providing peace of mind and durability for pool maintenance. 2 x Adapter 2 x Washer 2 x Clamp 1 x Screwdriver 1 x Thread Sealing Tape