Fermentation Bubbler Airlock & Bored Cork Bung by Almost Off Grid.
When you're making wine or beer in a demijohn, you need a fermentation bubbler airlock and bung.
It lets CO2 out of your home brew without letting contamination in.
Simply half fill the bubbler with water and you're good to go.
The Fermentation Airlock is a standard size, so fits all fermenters.
The cork Bung has a bore hole in it for the bubbler, and fits Standard Glass Demijohns.
Bung Size: top 31mm, base 26mm
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Great product, for my demijohns - got 10 gallons of dandelion wine bubbling away nicely!