DescriptionAre you looking for a professional, yet affordable built-infilter? Are you in search of a sturdy, trustworthy tool that can do multiple jobs at once? If yes, look no further! Our professional built-infilter must meet you needs. It is one of the best choices for you.Features- Color: As shown. - Size: 6.7 x 6.7 x 18.9 cm. - Material: Plastic. - Connecting to air pump can generate large amount of air bubbles and increase oxygen content in water. - Filter cotton provides wide surface area for culturing high-density nitrifying bacteria, thus playing a biochemical filtration role. - More quiet and delicate: special design makes it produce more air and more delicate bubbles with lower noise and no blockage after long-term use. - More elegant and beautiful: Design the ventilation line to the back of product, so that the product front can be simple and beautiful. - Dear buyer, due to lighting effect, monitor's brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you!