It releases carbon dioxide and is used in the fermentation of honey, white wine, and dairy-based alcoholic beverages while helping to prevent oxidation. Simple to operate: fill the airlock with water, insert it into the lid of the brewing barrel or the rubber stopper on the fermentation container, and close the lid securely. Effectively prevents insects from entering the wine or beer. Supports automatic fermentation processes without the need for manual intervention and is designed for long-term reuse. Suitable for fermenting pure juices, including white grape juice, mead, and for secondary fermentation of red wine. Subtype: Airlock Color: Transparent with red and black components Material: PP Size: Approximately 170x10mm Package Contents: 10 x Check Valves 10 x Lids 10 x Sealing Rings The package includes only the items listed above; other products are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3cm.