The Fermentation Airlock is a standard size so fits all Fermenters

with full instructions inside the pack

- a 2 litre plastic jug

and a clip

you can be making multiple brews at once

Almost Off Grid 6 x Fermentation Bubbler Airlocks & 6 x Bored Cork Bungs French Soap The Fermentation Airlock is aSet of 6 Fermentation Airlocks & Bored Cork Demijohn Bungs. 6 x Bubbler Airlocks which let CO out, without letting contamination in. Just half fill the airlocks with water and you're ready to go. Complete with red caps which are not designed to be airtight, they are simply to keep dust and fruit flies out of the airlocks The Fermentation Airlocks are standard size so fit all Fermenters. The bored Cork Bungs fit Standard Glass Demijohns. Bung Size: Top