The fermentation brewing airlock can be used for preservation, wine making, beer brewing, sauerkraut and kimchi fermentation to meet your daily fermentation needs.The infusion air lock facilitates fermentation because it can effectively isolate the air to prevent oxidation and allows the whole fermentation process to be fermented and extracted automatically at normal temperature without manual control .5 pieces of fermentation tube pipe model with cover for hobby needs. For post-fermentation of beer, wine, wort, juice and moreIt can be used for repeated long-term use in fermenters, up to 10 gallons. This one-piece fermentation bung made of food-grade and alcohol-resistant plastic with a lid is essential for hygienic fermentationThis gas attachment prevents bacteria, microbes, unwanted yeasts and contaminants from entering your mash. In addition, you can better control the fermentation process with a gas add-on and use the typical bubbling, rising gas, to reliably determine the end of fermentationProofing Tube/Fermenter Attachment/Hobby Proofing BungFunction:- Made of high quality BPA-free polypropylene with rubber stopper-Easy to use for healthy fermentation foods- Isolate the air to prevent oxidation and allow automatic fermentation- Suitable for boiling, brewing, preparing wine, beer, sauerkraut and kimchiDimensions: 17 x 6 x 2 cmPacking List:5 fermentation airlock