Our easy to use Flangeless Short Nut eliminates the need to flange tubing and is reusable. Made from solvent resistant Tefzel (ETFE) it is ideal for use where there are demanding sealing applications. It has a 1/4-28 Flat-Bottom port configuration and is for 1/8OD Tubing. It comes in natural, blue, black, black - 10 Pack, green, Red, Red -10 pack and yellow.