Trim rings

I'll give it a try. I was concerned about the rings being too deep and not snapping on.
I read the details, ABS chromed, not steel. I guess that is modern technology for you, probably a relatively new product in that size since the last time I looked (sometime PC) they didn't exist. 13" steel still does not seem to exist.
I also saw on Amazon 2 sets 1-1/2" and 1-3/4" deep. More confused.