100% brand new and high quality Features: Made of aluminum alloy material which is durable and sturdy. Fully installed, direct to use and labor-saving. Well-sealed caps & pipes, leak-proof, non-deformed, never loose. Professional pressure guage for safe-area indication, pressure watching. Decompression automatically for safer usage and operation. Simple to create pure CO2 constantly by chemical reactions. With adjustble air flow vavle to control CO2 volume easily. Note: 1.Don't open bottle directly when there's still on pressure, please wait for its automatic pressure release. 2.Please use food-grade citric acid and baking soda as the raw material. 3. For more specific instructions and usage, please read our user manual. Aquarium DIY CO2 generator only, other accessories demo in the picture is not included! Specifications: Power supply: input AC110-240V output DC12V Material: Aluminum Alloy Length: app.14cm/5.51in Color: As the pictures shown Optional Style: D,E Plug Style: Round Insertion EU,Flat Insertion US Quantity: 1 Set Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 1 Set x Aquarium DIY CO2 Generator(Product does not include bottles)