【Material】 The atomizer is made of high quality aluminum alloy. The surface is nickel plated and never rusted. 【Function】 The diffusion plate breaks down the CO2 into tiny streams of bubbles, then the CO2 can easily dissolve in water thus allowing plants to absorb the CO2 for photosynthesis. 【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 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. 【QUALITY ASSURANCE】 To provide you with the highest quality assurance, 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) Refinement cutting diameter: 24 mm