Point.... These 'copper' lines are not just soft copper.... that would not work. There are nickel copper lines that are DOT approved. use your google fu to see what is acceptable. https://www.google.com/search?q=copper+brake+lines&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a&channel=sb Don't try 'regular' copper.. not worth the risk!! understand the differences!!