Twin Bubble Air Lock With #6.5 Drilled Stopper

Also know as "S" type airlock. Comes with a #6.5 Bung to fit 5 and 6.5 gallon carboys.

Tip: Great for secondary fermentors, allows you to easily monitor pressure in your carboy. 

Fill to the line with boiled water or sanitizer to create a closed system. Allows the CO2 to escape and keeps oxygen out.

Buy your bungs and airlocks together and get a better deal.

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