This set of 2 rubber fittings ensures the smooth operation of your aquarium filtration system. These replacement connectors ensure a secure, leak-free connection between filter components, maintaining optimal water flow and filtration efficiency. Constructed of durable rubber material, these connectors are built to withstand the demands of continuous aquarium operation, and the A20228 connectors are precision engineered to work seamlessly with your existing FX Series filters, making maintenance and part replacement a snap. Whether you are performing routine maintenance or need to replace worn connectors, this set will provide you with the necessary components to keep your aquarium filtration system running at its best