【Material】 The atomizer is made of a high quality aluminum alloy. The surface is nickel-plated and never rust. 【Function】 The diffusion plate breaks down the CO2 into small streams of bubbles, so the CO2 can easily dissolve in water so that the plants can 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. 【High quality】 The CO2 diffuser has a stable shape and is not easily deformed due to pressure variation or the action of external forces. 【QUALITY GUARANTEE】 To offer you the highest quality guarantee, please contact us if you are not satisfied with the product. Color: Silver Features: Color: Silver / Purple / Blue Material: Aluminum Length: 6cm / 2.34 ’’ (approx.) Finishing Cutting Diameter: 24mm