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This airlock fits into our drilled stoppers and bungs. Made of plastic, it includes the body, piston and vented cap. Its straight design is easier to clean than other models. This is one of the most important homebrew tools you need and it wouldn’t hurt to buy a few backups.
Fill this airlock with water and insert it into your carboy’s drilled stopper or bung. The airlock vents the fermentation process’ gases and you can actually watch it bubble away! (Provided the homebrew fairies allow it…)