Click or scroll to zoom Tap or pinch to zoom SS 1/4" FFL Swivel Nut x 3/8" Barbed Adapter Save Liquid error (snippets/product-badge line 32): Computation results in '-Infinity'% $2.95 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Use this one piece fitting to connect 3/8" ID tubing to a 1/4" MFL threaded fitting like the one on your Corny Keg quick disconnect fitting. Use this one piece fitting to connect 3/8" ID tubing to a 1/4" MFL threaded fitting like the one on your Corny Keg quick disconnect fitting.