Airlocks enable CO2 to be released during fermentation, but it prevents oxygen from entering the fermenter and harming your beer, wine or other ferment. Add water to create the airlock's one-way valve. Compatible with our Fermentation Stoppers.

Choose between the S-Lock Airlock design and the Three-Piece Airlock design.

Make it a Brew Your Own Tool Kitwith a 1 Gallon Growler, Siphon, #6 Stopper , Airlock, Tubing, and Bottle Filler.