Steel Tube Nut, OL, 6mm (M12x1.0 Bubble), 5/card In Either Case, The Fitting (Whether A Tube Nut, Union, Or Adapter) Must Be Selected To Match The End Form Of The Tube Or Port It Will Be Mating To Or A Proper Seal Will Not Be Possible.
Black Oxide Fittings Provide Increased Corrosion Protection Over Standard Zinc-Coated Fittings.Nicopp Provides Easier, Longer-Lasting Replacement Than The Competition.