High quality material : The pool adapter is manufactured Made of high-quality plastic, which is resistant to wear and tear. corrosion, not easily deformed, sturdy and durable. The hose clamp is made of stainless steel, which can connect the hose and adapter stably and prevent water leakage. Easy to install. install: This pool adapter is suitable for connecting a 1.25" hose to a 1.5" piston valve or switching to a 1.5" piston valve. a more robust filtration pump. The small end connects to fits a 1.25" pipe. The threaded end connects to a 1.5" piston valve or a 1.5" piston valve. filter pump and simply tightens. Compatible: The Model A pool adapter is available for all filter pumps. 4000, 2500, 2000 and 1500 gph filter using Intex threaded hose fittings. Versatile: Hose adapters are available for hoses from filtration systems, pool pumps, submersible pumps, filtration pumps, water filtration systems sand or shut-off valves.