Fermentation Airlock Set: The fermentation tool you will get includes 3 plastic Fermentation Airlocks with lids and 3 rubber stoppers. Enough to meet your needs and let you 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 good tools for food fermentation. One-way valve design: Fermentation bung the one-way valve is designed to isolate the air well during secondary fermentation to avoid oxidation, and make the whole fermentation process run automatically and discharge at room temperature without manual control. Easy to use: just press install the rubber stopper with holes on the top of the fermentation vessel, insert the fermentation bubbler device into the rubber stopper, then pour water into the fermentation bubbler device and close the lid to start red wine fermentation. 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. Product Description Description: Our group of Fermentation Bubbler devices are made of safe and non-toxic plastic and silica gel. It has a wide range of applications and is very suitable for food preservation, fermentation of cabbage, kimchi and sauerkraut, as well as for brewing wine, beer, sake, etc. Removable Design: These Airlock Fermentation can be taken apart, which makes it easier for you to clean them. You just need to clean them with a brush or immerse them in bleach for disinfection. The reusable Fermentation Bubbler device does not require manual control and is easy to clean, this which is very useful for red wine fermentation. Features: Product name: Fermentation Bubbler with Stopper Material: food grade silicone and plastic high quality Size: Fermentation bubbler with lid: 11.5*4cm/4.52*1.57in Rubber stopper: 22*17mm/0.87*0.67in Color:white Package Contents: 3PCS x Fermentation Bubbler with Lid 3PCS x rubber stopper with hole