There's plenty to chose from, I even sell it/wrap parts with it too, but one I use is from a company called Hexis. 3M is just a brand that's known well, but the hexis is as good, if not better. It's really nice to work with I can at least say that. There are a couple of variations on it too, a matt effect (like dry carbon, the ultra light weight stuff) or a gloss effect (which is more like the carbon we see on road cars, with a laquer). Just depends what you want
Hope that helps