Fastrack Airlocks for Fermenting, Bubble Airlock for Wine Making and Beer Making, BPA-Free S-Shaped Airlock used for Brewing Wine, Beer, Pickles & more, Transparent Airlock Set Of 3
Use this Airlock and stopper in your fermenter to create a closed system that allows CO2 out and prevents harmful bacteria from getting in. Fill to the marked line with sanitizer or boiled water.