Features: Say goodbye to dirty and unpleasant tasting water! Our easy to replace and easy to clean filters provide a great solution for maintaining the cleanliness of your pet water supply. They can filter hair and metal, and improve the taste of water, so that pet can drink clean water, help to increase water consumption. In order to prevent carbon dust (which will not harm your pet) from falling into the water, please soak filter in water for 5 minutes and rinse it thoroughly with tap water before use. According to the pet's drinking frequency and the number of pet using the fountain, change filter every 4-6weeks. Measure your fountain before ordering and check whether filter is suitable for your fountain. Suitable for pet owners, and pet enthusiasts, our filters work with most popular pet water dispensers, offering convenience for many users. Specifications: Component: Nonwoven Cloth Size: About.166MM/6.5inch Quantity: 3Pcs or 6Pcs or 9Pcs Package Includes: 3Pcs or 6Pcs or 9Pcs Filters note: 1.Please allow 1-2cm errors due to manual measurement, note that you donot mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.