New tool addition
I haven't worn a ring regularly in over 30 years. I hung my wedding ring on the top of the tail light bezel on a 69 Dart I had at the time. It cut my finger on top and bottom, then I had to take a pair of pliers to make it round enough to get off my finger before the swelling started.
My battery post cleaner, just mix with water in a small container and brush on and let it work, then rinse with water.