4pcs Round Activated Carbon Fountain Filter Water Fountain Filter

Package of 500 pieces Finish washers are designed to accommodate the heads of a countersunk screw in order to provide a finished appearance Prevents the screw from pulling through the material 304 stainless steel for long life corrosion resistance Finishing washers are used in applications where the decorative appearance is important. The screw recesses into the finish washer to provide a clean appearance and the washer grips fabric and other light materials securely away from the hole.

Active carbon plus absorbent cotton can effectively filter the impurities and get cleaner water for your pets.