Copper/nickel. Very nice to work with. And lasts forever.
so i pulled the old brake line off the Fargo, bent it up to throw in scrap bin. That stuff made nice radius bends without kinking. I was shocked,70 year old brake line. So the technology was there to make nice bendable line,yet all the line we get now is garbage by comparison. All the advancements in metallurgy and manufacturing and the off the shelf line kinks if you look at it the wrong way…