This 3/16" tailpiece works with standard 3/16" ID liquid side tubing in a range of liquid dispensing applications. Most commonly, this tailpiece is used with a beer nut and a neoprene beer washer on the end of a shank as part of a faucet draft system. However, they are also used on sanke couplers for the liquid dispensing side. They can come in quite handy when replacing preinstalled liquid side connections in kegerators.