Description: 2pcs filter media in one pack Can be used for sea water, fresh water and planted tank Replacement media is the Activated Carbon Replacement Cotton Usage: Wash it first, then use it directly into the filter. Filter Sponge Activated Carbon Filter Media only, other accessories demo in the picture is not included Specification: Material: Filter sponge Dimension: app.13.5cmx5cm/5.31''x1.97'' Color: As the picture shown Quantity: 1 Package(2Pcs) Note: 1.Transition: 1cm=10mm=0.39inch 2.Please allow 1-3cm 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 includes: 2pcsxFilter Sponge Activated Carbon Filter Media (without retail package)