Our Flangeless Ferrules are excellent for connecting most rigid or semi-rigid tubes, including tubing manufactured from fluoropolymers (FEP, PFA, ETFE, ECTFE, etc.), PEEK, or stainless steel. Manufactured from Tefzel (ETFE) it offers superior chemical resistance. It has a M6 or 1/4-28 Flat-Bottom port configuration and is for 2.0mm OD Tubing. It comes in Red.