Easy Installation: Simply replace the old and foam with the new ones. The included flexible tube easily connects for continuous water . Complete Care Set: Get everything you need in one pack: two filter cartridges, two foam pre-filters, and one water tube for comprehensive refresh. Safe & Reliable Materials: Made from reliable plastic materials, these replacement parts are built to work seamlessly with your specific fountain model. Supports Hydration: By helping to filter out impurities, this replacement kit encourages your furry friend to drink more water throughout the day. Maintains Fresh Water: This fountain filter replacement kit is designed to help keep your pet's drinking water cleaner and more appealing.