Homebrew Bubble Airlock Carboys Stopper & Fermenter Seal Valve with Food Grade Grommets Wine Making

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Made of high quality BPAfree polypropylene w and rubber grommets

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

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3 Bubble Airlocks

3 Rubber Grommets