Fermentation Bubbler Set: The fermentation tool you will get includes 3 Plastic Fermentation Bubbler with Lids and 3 Rubber Stoppers. Enough to meet your needs and allow you to use it freely. . High Quality Materials: Our Airlock Fermentation Devices and Rubber Stoppers are made from food grade silica gel and high quality plastics, which are safe and non-toxic, and are of good tools for food fermentation. . One way valve design: Fermentation bung the one-way valve is designed to isolate air well during secondary fermentation to prevent oxidation, and make the whole fermentation process happen automatically and discharge at room temperature without manual control. . Easy to use: just install the rubber stopper with holes on the top of the fermentation container, insert the fermentation bubbler device into the rubber stopper, then pour water in the bubbler device for fermentation and close the lid to start the fermentation of red wine. . Wide Application: This Fermentation Bubbler device has a wide range of applications. It is an ideal choice for preserving food, fermenting cabbage, kimchi, sauerkraut and brewing wine, beer, mead, etc. . Our products are made with the highest quality materials and are designed to provide you with the best possible user experience. We strive to ship out all orders within three days of purchase, and the estimated delivery time is 8-15 days. When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don''''''''t hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it