You won't believe this stuff until you see it with your own eyes. You'll think I'm exaggerating. But the facts are that you can watch your headers glow red-hot and not damage the finish with this treatment. It's a silver finish that looks very much like polished aluminum and feels like plastic or vinyl. It lasts several years and keeps your tube headers from rusting or heat fatigue. Not only that, but 15 minutes after running - and seeing the tubes glowing red-hot - you can touch the headers and not get burned. It directs heat away so well that most heat passes out the pipes rather than being conducted through the metal. That also keeps your starter and other nearby peripheral assemblies cool. The coating is some form of ceramic that can expand and shrink with the change of metal at temperature. You can get it in a variety of finishes, with black and silver being the most popular. Really cool stuff!