There are a number of brands, but "Trim Lok" is a big one. Note that it comes in different sizes depending on the thickness of the edge you are covering.
One source is McMaster-Carr. If you go to their site at www.mcmaster.com and search "Self-Gripping Vinyl Edge Trim with Metal Core" you will see it. I have ordered many things via McMaster and had nothing but good service and fast shipping. They don't always list brand names, but will often tell you if you call and ask (if you want to know).
I've also seen it at places like West Marine (might have been Taco brand?) although that will typically be only one color/size on the shelf.
