Review on Ultimate 3-Piece Mini Wire Brush Set by OriGlam: Rust Paint Metal Cleaner, Welding Slag and Rust Cleaning Tool, Handy Steel/Nylon/Brass Brushes for Paint, Rust, and Dirt Removal by David Burrell

Specifically, I mainly use this to make keys look nice again, but I've used it a few times. It is difficult to tell what is dirt and what is the natural tarnish of the metal. We just bought a house (well, the bank bought the house I guess. congradudolences, as they say.) and I took the keys and gave them to my SO and wanted to give her shiny keys that are for a new one House are suitable, not stupid old keys. So I scrubbed them with these wire brushes, soaked them in a little vinegar, then scrubbed them again, soaked them in a little more and washed them off and they were shiny and brassy like new. I don't think there is anything special. The thing about these particular wire brushes is that they work great, appear to be durable, are inexpensive, and come in three levels of hardness so you can choose the one that works best.