After about 15,000km the feet are still incredibly smooth, quiet and the wheels stay clean! I've read about the high-pitched squeak of ceramic brakes, but haven't noticed it, and the neighborhood dogs don't complain. They include all the necessary gaskets and some brake lubricant. It was probably the bare minimum, but it's good that I had an extra. Since they don't cost much more than semi-metallic ones, this is a win in everything.