I wanted to try these for an understated look. All plastic but durable. I don't think they will break. My old caps came off easily and the plastic on my old caps felt cheap. it's strong But they were difficult to put on. It may not be easy to remove. I may have to remove the rim to remove these caps. I had to use a small flathead screwdriver and press down on the little tabs to snap them into place. But once I did, they were really stuck. Nobody will spay her, that's for sure. They have the appearance of a rubbery smooth surface on the face. Strange, but we'll see how long they last. For the money I would, but that's about it.