Just half-fill the airlocks with water and you're ready to go. 6 x Bubbler Airlocks which let CO² out, without letting contamination in. The bored Cork Bungs fit Standard Glass Demijohns.
6 x Fermentation Bubbler Airlocks & Rubber Bungs Corks Demijohn Wine Beer Cider
10 x Fermentation Bubbler Airlocks & Bored Rubber Bungs Corks Demijohn Wine Beer
10 x Fermentation Bubbler Six Chamber Airlocks for Home Brewing Fermenting
3 x Fermentation Bubbler Airlocks & Bored Cork Bungs - Demijohn Wine Beer
6 x Bubbler Airlocks & 6 x Bored Rubber DJ Bungs
Airlock & Rubber Bung x 2 - Fermentation Bubbler Combo for Demijohn Fermenter
