1/4" x 1/8" Tube OD x Male NPTF 90 Degree Barstock Elbow Brass Fitting 10-Pack1 4" x 1 8" Tube OD x Male NPTF Brass Barstock Elbow 10 Pack Use this 1 4" x 1 8" Male NPTF Barstock Elbow with copper, aluminum, and thermoplastic tubing. Not recommended for steel tubing. Manufactured for low and medium pressure tubing connection work where excessive vibration or tube movement is not involved. Not recommended for application using gaseous media. This listing comes with 10 brass bar stock elbows. Features 1 4" x 1 8" Tube OD x Male