6 gallon glass carboys are perfect for winemaking! Glass is more inert than plastic, making it resistant to scratching, which can cause dirt deposits that harbor harmful bacteria. Many wine kits make a volume of 6 total gallons of wine. Racking your wine into one of these carboys for secondary can improve clarity while eliminating head space, which can cause premature oxidation. In fact, they are often specifically recommended by wine kit manufacturers for use after primary fermentation is complete. Protect your wine investment with a 6 gallon glass carboy today to enjoy brilliant, delicious (and stable) wine tomorrow!