Most of the SS braided brake lines are not DOT certified. This means that anyone can make them up and install on a car. This is not to say that they are bad, but that they are the infamous "for off-road use only" pieces. I had these on my project car until I found some that had DOT certification Russell/Edelbrock. While I'm not a bid fan of this mfr, at least they do have the cert for my NY State inspection. I did discuss this with a supplier and his response was that it was in the neighborhood of $30,000 for the certification process and to have a positive monetary payback he would have to raise his prices to be non-competitive PLUS sell many thousands of lines.