This 5/16" tailpiece works with standard 5/16" ID CO2 tubing. Most often, these are found on the CO2 side of sanke couplers. Used in conjunction with a beer nut and a neoprene beer washer, these tailpieces can create a tight seal for CO2. Useful as a replacement on kegerator setups, make sure you have one on hand in your draft emergency kit!
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