All new lines and unions. CN460 has small bends in the middle of the lines. 1/4″ x 40″ Cupro Nickel – 5. 3005 – 1/4” Brass Union – 4. AGS Tube size 1/4” Thread size 7/16-24 inverted (123400-302×4) – 3. AGS Tube size 5/16” Thread size 1/2-20 inverted (123500-302×5) – 10.