product information Drinking fountain replacement filter Replacement filter for cat fountain. Make sure your cat s drinking water is fresh clean and safe. We help you to take care of your cat s health. Most filters on the market are made of activated carbon. However these filters are made of high-quality activated carbon resin and cotton mesh. The water is deeply purified and safer. Specification: Name: Cat Water Fountain Filter Material: activated carbon resin Size: Length: 12.5cm inner diameter: 3.5cm thickness: 1cm Package information: Package Size: 13 * 8 * 13cm / 5.12 * 3.15 * 5.12in Package weight: 142g gift wrapping Package list: 8 * water well filters