Used to attach a tail piece to a keg coupler or shank.
I wanted to make a party type keg beer faucet to be kept in my kegerator to avoid hot beer in a tower. I took five feet of the 1/16th inch tubing and heated one end in hot water and slid onto the end of a plastic party faucet and secured using a steel screw clamp. To the other end of the line a hex nut, they come as wing nuts also that can be tightened without a wrench, was placed on the line and 3/16th inch tail piece was inserted into the line. On the other side of the hex nut the line was secured with a second steel clamp. A black vinyl washer to seal it all up is used to connect the hex nut to the tap and now I have what I need. All at a good price sent in timely fashion.