I was cleaning up an old HEAD Club Pro racket, where the original grommets are all chipped off and turning to garbage. As I was removing them, some small pieces dropped INTO the hollow racket body itself. I then spent more than half an hour chasing those little pieces and forcing them to drop out of the grommet holes. However the question is when did HEAD stop making hollow rackets, or even today's rackets are still with a hollow core? A side note, as I was using a screw driver cleaning the grommets, I accidentally chipped off a small piece of paint twisted, and I noticed it is clear that the Club Pro has high % of fiberglass construction, because the material under the paint looks as if it is semi-transparent glass, not like black graphite materials.