Feature: 1. Applicable Model: This 4550 pool filter pump hose adapter conversion set is designed for use with the 4550 model, providing a seamless compatibility. 2. Easy Installation: The conversion hose features an internal thread of 57mm and an outer diameter of 31mm at the hose interface, making it easy to install and connect to your pool or spa. 3. Durable and Reliable Performance: The 4550 filter hose conversion kit is made with plastic materials, ensuring long lasting durability and reliable performance. 4. Seamless Conversion: With this 4550 filter hose conversion kit, you can easily convert your pool or spa to accommodate the 4550 model, enhancing your pool or spa experience without any hassle. 5. Improved Versatility: By using this conversion hose kit, you can expand the compatibility of your pool or spa, allowing you to use a wider range of pool and spa accessories. Specification: Item Type: 4550 Filter Hose Conversion Kit Product Material: Plastic Weight: Approx. 55.00g / 1.94oz Internal Thread: Approx. 57mm / 2.2in Outer Diameter at Hose Interface: Approx. 31mm / 1.2in Compatible Model: for 4550 Application: Pool, Spa . Package List: 1 x Gasket 1 x Conversion Hose