Get it by Saturday December 2nd by choosing the expedited option during checkout.
Twin Bubble Airlock with Carboy Bung
Allows for slower evaporation
Universal Carboy Bung for 3, 5, 6 and 6.5 Gallon Glass Carboys
Imported from USA
When filled with water allows Co2 gas to bubble out and prevents air from getting in. Enclosed design allows for slower
evaporation from airlock bubble.