Description: High QualityGlass CO2 diffuser, made of glass and ceramics, which is durable, wear-resistant, scratch-resistant, reusable, energy saving and long life service.Fish Tank AccessoriesThis item will dissolve Carbon Dioxide (CO2) speedily into your aquarium or fish tank.Easy to UseHigh efficiency of diffusing carbon dioxide.Easily to install and use, just use the suction cup (included) to fix it on the aquarium, and the position can be adjusted.FeaturesHelps to ensure plants receive proper amounts of CO2, improve the growth and health of your plants with sufficient CO2 supply.ApplicationSuitable for use as a decoration or provides a good source of aeration for the tank or aquarium. Specification: Material: Glass,Ceramics Size Chart: Length about:8.2cm/3.23inch Package Includes: 1 Piece CO2 Diffuser1 Piece Check Valves1 Piece Suction Cup1 Piece U shape Connecting Pipe Note: 1. Please allow slightly error due to manual measurement.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.3. Wish you a wonderful online shopping! Customer satisfaction is our primary concern. If the product is somehow cracked or broken during shipping, please feel free to contact us. We will try our best to give you a satisfactory solution.