Airlocks let CO² out without letting contamination in. The Bungs fit Standard Glass Demijohns. Just half fill with water and you're ready to go.
Fermentation Bubbler Airlocks and Bored Cork Bungs x 2 Demijohn Wine Beer
10 x Fermentation Bubbler Airlocks & Bored Rubber Bungs Corks Demijohn Wine Beer
6 x Fermentation Bubbler Airlocks & Rubber Bungs Corks Demijohn Wine Beer Cider
3 x Fermentation Bubbler Airlocks & Bored Cork Bungs - Demijohn Wine Beer
6 x Fermentation Bubbler Airlocks & Bored Cork Bungs Demijohn Wine Beer Cider
5 x Fermentation Bubbler Airlocks & Bored Rubber Bungs Demijohn Homebrew
