This is a mini fish tank filter. It is made of plastic material, durable to use. It has large surface area, easy and convenient to use filter. Combines filter cotton design, bio-filtration, oxygenation and physical filtration functions. Features-Color:Assorted Color-Material: Plastic-Size: 10.00X3.00X3.00cm/3.93X1.18X1.18in-Note: It comes with two air hoses , and the hose’s length is about 90cm/35.43in.-This biochemical fish tank filter is very dense and has a good filtering effect.-It need to be connected to the oxygen pump to play its function.-This single mini sponge filter is size and takes up a little space.-This filter can be also given as a present to your fish owner family and friend.-You can take down the filter cotton from the filter easily to clean or replace itPackage list: 2 x Small Fish Tank Filters