Canister Filters Intake Inlet Tube Fish Tanks External Filter Replacement Accessories With Strong Suction Cups Descriptions system, super biochemical sponge filter features and has an excellent filtering effect while oxygenating the water, developed foam materials supports the of allowing for mechanical filtration in addition to biological filtration, which will harmful waste, ammonia and resulting in a environment for your fish, particular they are useful for as breeding filter or as secondary filter. Features:and High-quality aquarium sponge filter for efficient biological filtrationSupports large to aquarium wasteDense, high-quality foam longer lasting aquarium useDo not trap and are safe for small size fish such as dwarf killifish, Specifications Plastic+Biochemical Sponge+MetalColor: BlackHeight: 12cmDiameter: 5.5cmQuantity: 1 SetNote:1.Transition: 1cm=10mm=0.39inch2.Please allow 0-3cm error due to manual measurement. pls make sure you do not mind before you bid.3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!Package Contents:1 x Biochemical Sponge Filter1 x Hose