Bubble Airlocks, 4 Pack Fermentation Airlocks Brewing Airlock Wine Airlocks Kit with Rubber Airlock Stopper Plugs for Preserving, Brewing, Making Wine, Beer, Fermenting Sauerkraut, Kimchi Feature: -Made of high quality BPA-free polypropylene w and rubber stopper -Easy operation for healthy fermentation food -Isolate the air to prevent oxidation to allow automatic fermentation -Suitable for preserving, brewing, making wine, beer, fermenting sauerkraut, kimchi Packing list: 4 * bubble airlocks 4 * stopper 4 * airlock lids

• Brewing airlock makes easier for the fermentation caused it could effectively isolate the air to prevent oxidation and allow the whole fermentation process to be automatic fermentation and exhaust at normal temperature without manual control.
• A high-quality fermentation kit. Each package includes 4 pieces bubble airlocks, 4 pieces stopper and 4 pieces airlock lids. Stopper: 0.9*1.02*0.67in (2.3*2.6*1.7cm), airlocks height:6.69*width:2.16in (17*5.5cm)

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