Product Name: Carbon Dioxide GeneratorProduct Specifications: 3.3CM Outer DiameterProduct Material: Engineering PlasticsProduct Function: Suitable For Various DIY Reactors, Directly Tighten Carbonated Drink Bottles, Safe, Durable And AirtightSpecifications:Features:1. Completely Installed And Used Directly, Saving Labor2. Well-sealed Lid, Leak-proof, Not Deformed, Never Loose3. Professional Pressure Gauge For Safe Area Indication And Pressure Monitoring4. Automatic Pressure Reduction, Safer To Use And Operate5. Simple, Continuously Generate Pure Carbon Dioxide Through Chemical Reactions6. With Adjustable Air Flow Valve, Carbon Dioxide Volume Can Be Easily ControlledPackage Included:1*Carbon Dioxide Generator