Premium Materials: These swimming pool hose adapters are made of high quality plastic, wear-resistant and strong, not easy to deform or break, always rust and can last for a long time, making them the best partner forswimming pools.</ p>Applicable diameter: swimming pool hose adapters can be used instead of spiral hoses, suitable for connecting swimming pool hoses, for 38mm swimming pool hoses and 32mm swimming pool hoses with 2 inch male thread, such as standard filtration systems.Pool Adapter A: If you only have a 1.25 inch pool hose connector, but install a 1.5 inch piston valve or upgrade to a more powerful filter pump, thispool adapter A is the ideal solution.Specifications: Swimming pool hose adapters are suitable for all 4000, 2500, 2000 and 1500 gallon/hour filtration pumps with threaded hose connections, please confirm the specifications before purchasing.Wide range of applications: the hose adapters are suitable for hoses of filtration systems, submersible pumps, swimming pool pumps, filtration pumps, sand filter systems or shut-off valves.We recommend using hose clamps in the area where the water hose meets the nozzle.