【Material】 The atomizer is made of a high quality aluminum alloy. The surface is nickel plated and never rusted. 【Function】 The diffusion plate breaks down the CO2 into tiny bubble streams, then the CO2 can easily dissolve into water, allowing plants to absorb the CO2 for photosynthesis. Br> 【Easy to install】 The CO2 diffuser is easy and convenient to install and use by attaching it to the side wall of the aquarium with a suction cup. Anyone can easily install it without instructions. < Br> 【High quality】 The CO2 diffuser is in a stable condition and cannot be easily deformed due to pressure changes or external forces. Br> 【QUALITY ASSURANCE】 To provide you with the highest quality assurance, please contact us if you are not satisfied with the product. Color: Silver Properties: Color: Silver, Purple, Blue Material: Aluminium Length: approx. 6 cm Refining diameter: 24 mm