Replacement filter for cat fountain. Keep your cat's drinking water is fresh clean and safe. Helping you to take care of your cat's health. The water is deeply purified and safer.Features:Compatible with YOUTHINK HOMMI ISYOUNG KOALAD HAPPYPAPA PEDY DADYPET water fountain and other of same size. Size: 5in(outer diameter) 1.5in(inner diameter).Activated carbon can adsorb impurities and odor keep the water fresh and clean.Water quality can be removed by the three 3 types of filtration. The external cotton layer on each filter captures hair and debris. Three steps of filtration can assure the quality of the water and enhance the taste of fresh water for your cats.Rinse the filter with water thoroughly before using easy to mount it on pet water fountain.In order to ensure the water clean the filter should be replaced in time please replace them within 2 to 4 weeks.Any problem please contact our store without hesitation. Honor to serve youSpecification:Name: Cat water fountain filterInside material: Activated carbonSize: Outer diameter:127mm/5in inner diameter:38mm/1.5in thickness:8mm/0.31inPackage Information:Package size: 13 * 13 * 1cm/ 5.12 * 5.12 * 0.39inPackage weight: 10gPlastic PackagingPackage List:1* Cat water fountain filter