Value pack of 8 filters,which can be used in most 2.5L pet water dispensers.Diameter is around 5 inch and inner diameter of 1.5 inches,suitable for the flower fountain of same size.Composed of a cotton layer,activated carbon and an ion exchange resin.They can filter hair, heavy metals, and improve the taste of the water so that pets can drink clean and fresh water,which helps to increase water consumption and reduce the risk of urinary tract infections.Our upgraded 4-Grids water fountain filters has an inner diameter with a handle, which is convenient for you to take when replacing the filter elements. The groove design in the middle of each lattice helps to distribute the activated carbon and ion exchange resin more evenly.Note: Rinse fiter with running water before use. The front of the filter is facing up and the back is facing down. Replace fiter every 2-4 weeks.When it is found that the filter elements starts to turn green and black, it needs to be replaced.Compatibility:For most round pet fountains Including but not limited to for Wonder Creature, , , Beacon Pet, , , Vekonn, , , , YEACHA, , Noodoky, , Rkicemoy, Moobona, , Colour: whiteMaterial: non-woven fabricSize: about 127mmPackage Contents:8 * Pet Water Fountain FiltersOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.