There connecting link is pvd coated steel. I shaved the top of that and narrowed it, all by fractions of a mm with my dremel and a 3/4" grinding wheel. It took a while bc i didnt want to remove too much material.
I can attest to the rest being ceramic, however (at least the next link). Several times the sanding disc touched the next link and shot sparks. The ceramic is very good, it scratched the al carbide more than it got scratched.
Some of the ss was visible (barely) after I attached it
The most obvious spots in the pic are dust, the only place that was actually scratched was under the lug plate.
But I have since fixed that up with a little black paint and a needle (to get that tiny bit of paint in a small place)