yeah the coating is there i assume for no purpose other than to distinguish the tips from each other. once you install the coating will be all gone, like a lepro. the black is thinner than the naturals, you can put a pad under there if you want it a little taller. i have both tips, and they are both very hard, but the black is a little harder in general. not a huge difference, but definitely harder. there is also some variance in the tips, so sometime you'll get a slightly softer black and a really hard natural. if you want it to be really hard for a break/jump cue, soak it in mineral spirits (could probably use other liquids too like milke, etc.) and then press the hell out of it for a few days.