Metal Polish.....Most of them aren't worth the bottle they are packaged in, but California Custom's Purple Metal Polish IS NOT one of them. I tried this product a few years ago and from the second I started using it, I could tell it was better than any product I had used in the past. Not only does it shine up the metal surface, but it does it with very little effort, and cleaning it up afterwards is a breeze. Couple it with their Aluminum Deoxidizer (for aluminum surfaces) and you'll never look at metal polishing the same way again. A little hint: If you are polishing large flat surfaces, or even spots with no sharp edges, use a buffer for even faster and better results. I find the Porter Cable 7424XP with a 3" polishing pad works the best!