PACK OF 2 - Twin Bubble Airlock and Carboy Bung Stopper fits 3, 5, 6, 6.5 Gallon Carboys

• Keeps CO2 out and air in: When filled with water, it allows CO2 gas to bubble out and prevents air from getting in. • Slows evaporation: Enclosed design allows for slower evaporation from airlock bubble. • Universal fit: Package contains 2 Twin bubble airlocks and 2 universal carboy bungs that fit 3, 5, 6 and 6.5 gallon glass carboys.

This product is great for homebrewers and winemakers. You can use it when you're brewing beer or making wine in 3, 5, 6, or 6.5 gallon glass carboys. The package comes with 2 twin bubble airlocks and 2 universal carboy bungs. These items are designed to keep your brew or wine safe by allowing CO2 to escape while keeping air out, and they also slow down evaporation from the airlock bubble.