Fermentation Airlock Set: The fermentation tool you will get includes 3 plastic fermentation airlocks with lids and 3 rubber stoppers. To meet your needs and allow you to use it freely. High-quality materials: Our Airlock Fermentation Devices and rubber stoppers are made of 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 airlock the one-way valve is designed to isolate the air well during secondary fermentation to prevent oxidation, and make the whole fermentation process proceed 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 airlock device into the rubber stopper, then pour water into the fermentation airlock device and close the lid to start the fermentation of red wine. Wide application: This Airlock device Fermentation 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 Airlock Fermentation Device Group is made of safe and non-toxic plastic and silica gel. It has a wide range of applications and is very suitable for preserving food, fermenting cabbage, kimchi, and sauerkraut, as well as brewing wine, beer, sake, etc. Removable Design: These Airlock Fermentation can be disassembled, making it easier for you to clean. You just need to clean them with a brush or immerse them in bleach for disinfection. The reusable Fermentation Airlock device does not require manual control and is easy to clean, which is very helpful for red wine fermentation. Specifications: Product Name: Fermentation Airlock with Stopper Material: Food grade silicone and high quality plastic Size: Fermentation Airlock with Lid: 11.5 * 4 cm / 4.52 * 1.57 in Rubber Stopper: 22 * 17 mm / 0.87 * 0.67 in Color: White Package Contents: 3PCS x Fermentation Airlock with Lid 3PCS x Rubber Stopper with Hole