Bung Size Base: 27mm. Just half fill with water and you're good to go.
Fermentation Bubbler Airlock Bored Cork Bung for Demijohn
10 x Fermentation Bubbler Airlocks & Bored Rubber Bungs Corks Demijohn Wine Beer
4 x Fermentation Bubbler Airlocks & Bored Rubber Bungs Corks Demijohn Wine Beer
Fermentation Bubbler Airlock & Bored Rubber Bung Cork - for Demijohn Wine Beer
2 x Fermentation Bubbler Airlocks & Bored Cork Bungs - Demijohn Wine Beer
3 x Fermentation Bubbler Airlocks & Bored Cork Bungs - Demijohn Wine Beer
