Premium Material: Made of high-quality, thick and sturdy plastic material, our replacement hose adapters can endure extreme usage. Applicable Size: Our A-type hose adapter can connect threads with a 2 3/8 inch outside diameter and is suitable for 1 1/4 or 1 1/2 inch hoses. Our stainless steel clips fit diameters from 27-51mm, and the inner diameter of the rubber washer is 40mm (1.57 inches). Wide Application: Our pool hose connector set fits all 4000, 2500, 2000, and 1500 gallon per hour filter pumps that use threaded hose connections. They can connect different size hoses or fittings, solving compatibility issues between above-ground pools and filter pumps. Easy Installation: Our pool pump fittings are easy to install. Choose the appropriate method based on your pool equipment and hose size. Connect quickly and enjoy a smooth swimming experience. Color: As shown in photo Material: Plastic Package Contents: 4 x A-type hose adapters 4 x Stainless steel clamps 4 x Rubber washers Note: This package includes only the items listed above. Other products are not included. Note: Slight color variations may occur due to lighting and display differences. These variations do not affect product performance. Measurement error is +/- 1-3cm.