Product review (5 stars): Good Replacement, look just like the originals
Needed to replace my originals which were horribly stained.  They do stain easily, which is annoying, but, since reading reviews on Amazon, I picked up a great tip.  Put them in a gallon size zip top bag with ammonia (they don't need to be swimming it in, just moist), seal up, leave in the bag for 10 or 15 min - or as long as overnight.  Clean up is much easier, a little scrubbing, but nothing like I used to do.  I will try to keep my new set stain free.  This tip worked pretty well with my old burner covers, but with years of built up stains and rust setting in (because my husband wire wheeled them to try to remove stains) I needed new ones.