Product review (3 stars): Needed modification...
I have an older Tappan cooktop. These the trim rings and drip pans were nearly the size of the original parts, but not quite. Because of this, I needed to modify slightly several of the parts. For example, the cut-out in the drip pans was not quite deep enough, so I cut away some material.  The fact that the metal on these parts is thinner than the original turned out to be a virtue.

Since I was unable to find exact replacements which probably would have been much more expensive, these are a adequate replacement.