【Material】 The atomizer is made of high quality aluminum alloy. The surface is nickel plated and will never rust. 【Function】The diffusion plate decomposes CO2 into small streams of bubbles, making CO2 easy to dissolve in water, allowing plants to absorb CO2 for photosynthesis. 【Easy to Install】 The CO2 diffuser is easy and convenient to install and use by attaching to the side wall of the aquarium with a suction cup. 【High Quality】 The CO2 diffuser has a stable shape and is not easily deformed due to pressure fluctuations or the action of external forces. 【QUALITY GUARANTEE】 In order to provide you with the best quality guarantee, if you are not satisfied with the product, please contact us. Color: Silver Features: Color: Silver / Purple / Blue Material: Aluminum Length: 6cm / 2.34’’ (Approx.) Finish Cutting Diameter: 24mm