TAILST-038
3/8" stainless steel barbed tailpiece.
Are you building your own beverage jumpers? You'll need 5 parts for each end of the tubing:
Once assembled, your beer nut (or wing beer nut) will connect to any jockey box input, jumper input, faucet shank, coupling shank, or beer coupler. (Sankey D, etc.) They all use the same threads.