Use this K - Lok coupler in commercial settings like bars, restaurants, or breweries to quickly connect and disconnect draft lines from kegs. It's perfect for bar owners, bartenders, and homebrewing enthusiasts. It directly installs on your keg coupler, and pairs with K - Lok Male fittings for Gas In and Beverage Out. This coupler is designed to stop the flow when disconnected, making it a practical addition to any draft system.