Perfect correspondence: only compatible with the UAHPET cat water fountain of 67 oz/2 l. Lot of 6 premiums: the lot includes 6 lots of spare filters for fountains for superior quality pets and a batch of 6 spare filter sponges. They are packed and sealed individually to maintain high quality . Fresh and filtered water: each filter is made up of ecological shell, KDF, ion exchange resin, quartz sand, charcoal activated with coconut and cotton. & nbsp; They can filter hair, heavy metals and improve the taste of water so that domestic animals can drink clean and fresh water all day, which helps increase water consumption and to Reduce the risk of urinary tract infections. Recommendations: to prevent the coconut active coal dust (which will not harm your pets) spreading in the water, please dip the filter and sponge in the water for 1520 minutes and rinse them carefully with running water before use. Easy to replace: easily withdraws when you clean the fountain of your pet.