Includes 2 twin bubble (S-shape) airlocks and 2 fitting silicone/rubber carboy bungs, providing a complete airlock seal for homebrewing beer, winemaking, cider, or fermenting vegetables.
Twin bubble airlock design lets carbon dioxide gas escape naturally during active fermentation while blocking air, wild yeast, fruit flies, and airborne contaminants from entering your fermenter.
Transparent body allows you to easily track bubble rate and monitor fermentation activity without opening the container and exposing your batch to oxygen.
Crafted from BPA-free, durable plastic and food-safe stopper material that creates an airtight seal in standard glass carboys, demijohns, or mason jar fermentation lids.