Features: brand new and high quality Easy to use: It only needs to be easily put into the groove. We recommend replacing the filter element in 3-4 weeks. Purification performance: The fountain filter replacement can filter hair, residue, remove peculiar smell and odor in the water, keep the water for fresh, so that pets can drink clean and for fresh water. Suitable for most for cat fountains, please check the shape and size first. The package includes 4pcs filter core and 2pcs filter sponge, enough for you to use for a long for time. Made of high quality materials, effectively purify water, keep water safe. Package Includes: 1 Set Pet Water Dispenser Filter Replacement (6Pcs Set) Specifications: Material: Non-Woven Fabric, Sponge Color: Filter Core-White Filter Sponge-Black Size (Approx.): Filter Core-7.5x4.3cm/2.99x1.69in Filter Sponge-6x3cm/2.56x1.18in Weight: Approx.40g note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!