This all-PEEK One Piece Super Flangeless Fitting is very easy to use and is an excellent choice for those connections that need to be broken frequently and tubing assemblies because they swage onto the tubing. Manufactured from biocompatible PEEK, it offers superior chemical resistance. It has an M6 Flat-Bottom port configuration Fitting and is for 1/16 and 1/8 OD Tubing. Designed for use with Fluoropolymer tubing only.