Premium Material: Made of high quality plastic material, thick and sturdy, our replacement hose adapters can withstand extreme use. Applicable Size: Type A hose adapter can connect threads with an outer diameter of 2 3/8 inches and can fit 1 1/4 or 1 1/2 inch hose. Our stainless steel clips can be shrunk within a diameter of 27-51 mm and the inner diameter of the rubber washer is 40 mm/1.57 inches. Wide Application: Pool hose connector set perfectly fits all 4000, 2500, 2000 and 1500 gallon per hour filter pumps that use threaded hose connectors. Can be connected to different sized hoses or other connections to solve the incompatibility difficulties between above-ground pools and filter pumps. Easy Installation: Our pool pump connectors are easy to install. Choose the right installation method according to the size of your pool equipment and hose. So, connect easily and enjoy a smooth swimming. Please note: The physical color difference or difference does not affect the use, please