Perfect, I replaced the original Weber flame guards that were enameled, which despite all the care and cleaning, after 6 years and use at least once a week, had rusted, punctured, and were causing flare-ups constantly. For a month now, very satisfied. Once they heat up, they will lose their shiny silver appearance, don't be afraid that something happened to them, it is normal for this to happen, it does not affect their performance.