Shaving Drip Rails - need pics and info

I've been looking at different mouldings for my windows as we speak. I have a buddy that does tops chops all the time he ordered a few samples for me to check with. Vent windows and quarter windows would be the real pita. I saw a bit on hot rod tv a few years ago about this stuff they sell with clips built into it to hold it in place but I have never found the actual stuff they showed.