My fountain doesn’t work and I have the new filters that I can’t return… normally around $25 in Amazon… 【8PCS Filters+2PCS Sponge Filters】Also Fit oneisall, KCUCOP, VOKUA, TEBALO and Beirui 2.6L transparent cat fountain. You’ll get a 8-pack resin & activated carbon filters and a 2-pack pre-filter sponge for pump and top cover. The 2 sponge filters is an extra bonus that the small one is to save the pump from getting clogged by hair and sediments,the other catch hair and debris on top bowl. Each filter is individually sealed in plastic bag for longterm storage 【SUFFICIENT MATERIALS】:The premium cat water fountain filter replacement is filled fully with activated carbons and Ion exchange resin,almost two times more than most filters for pet fountains using similar material on the market,which can achieve stronger purification performance and extend the use time 【SAFE DRINK/4-LAYER PROTECTION】: Besides the pre-filter sponge to pretect the pump, each food grade cat fountain filter replacement is made of PP cotton layer,coconut shell activated carbon and Ion exchange resin,that filter out pet hair, dust, sediment, debris and heavy metal, as well as removes odors to freshen water for a better taste and softens tap water.The item enables your pet to drink more healthy water,as to reduce the risk of urinary tract infections and kidney issues