Package Included: You will receive 8 replacement pieces of black PET fountain sponge filter. Sufficient quantities to meet your pet’s drinking water needs. Size: These pet sponge filters are 6.5 x 3 cm and the pet sponge filter replacement is compatible with 2.5L cat water dispensers. (Please confirm the size before buying.) Premium Material: These cat fountain filters are made of high quality polyurethane sponge, which has good water purification effect for pet drinkers, allowing your pets to drink water. ‘water. Some waterclean, more willing to drink. Filters Impurities: This filter sponge filters out impurities, especially debris like pet hair, ensuring that every drop of water your pet drinks is clean. The filter sponge can prolong the service life of the pumpwater supply. Tips: The filter sponge is not suitable for repeated use, because some impurities after filtering will remain on the sponge, it is recommended to replace it every 2-3 weeks. Box contents: 8 cotton water