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Set Include: 6 Pcs Airlocks Condition: Brand New Material: Plastic Color: Clear(as pictures show) Size: Approx. 11.5cm/4.6 inches Product Description: Plastic Fermenting Airlock for Home Brew Beer Making. Made of food grade material, can be used for long-term. Lightweight and compact size is for convenient storage and space saving. Let fermentation gas out and to keeps air from reaching the beer or wine. Can be used for a variety of purposes, to preserve foods (sauerkraut, pickles) or create delicious wine and beer.