Twin Bubble Airlock and Carboy Bung (Pack of 2)

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Feature

Twin Bubble Airlock with Carboy Bung
Allows for slower evaporation
Universal Carboy Bung for 3, 5, 6 and 6.5 Gallon Glass Carboys

Description

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.