[Material]The atomizer is made of high quality aluminum alloy. The surface is nickel plated and never rust.[Function]The diffusion plate breaks down the CO2 into tiny bubble streams, then the CO2 can dissolve easily in the water allowing plants to absorb the CO2 for photosynthesis.[Easy to install]The CO2 diffuser is easy and convenient to install and use by fixing it on the side wall of the aquarium with a suction cup, anyone can install it easily without instruction.[High quality]The CO2 diffuser is in stable shape, not easily deformed due to pressure change or impact of external forces.Product DescriptionColor:SilverSpecifications:Color: SilverMaterial: AluminumLength: 6cm/2.34''(Approx.)Refinement cutting diameter: 24mmFeatures:1. Carbon Dioxide Diffuser Atomizer Fish Tank Aquarium Slim Aluminum CO2 Diffuser.2.Made of high quality aluminum alloy. The surface is nickel plated and never rusts.3. Clean and tidy, fine effect.4.Our atomizer will have a lot of bubbles appearing when they start working and will be normal for a few hours.Package Includes:1x CO2 Atomizer Aquarium System DiffuserNote:1.Please allow 1-2cm error due to manual measurement. Thanks for your understanding.2.Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.