SAE 9/16-18 Male Inverted Flare (IF) x 7/16-24 Female Inverted Flare (IF). Great SAE inverted flare brake line adapter fitting. Brake Line Adapter - Master Cylinder Adapter. Manufacturers use various fitting on 1/4" brake lines but the standard 1/4" pre-made brake tubing will have a 7/6-24 tube nut on each end.
