Koch chemistry Rrr, reactive rust remover, rust relief/rim cleaner 500 ml

This Koch chemistry reactive rust remover does the job. It's especially useful if you have metal objects which are developing rust. I used this solution on my barbell which had a small amount of rust developing on it, and the rust was removed completely. It took several attempts to get the rust off with a brush and paper towels, but the Koch rust remover did the job quite well. Now my barbell is no longer rusty. At first, when you apply the Koch rust remover, the chemical reaction will make the residue purple. Keep wiping off the solution after it turns purple, and eventually, the rust will go away completely.

Some rust staining has started to appear on my rear brake rotors of my Audi RS4. I sprayed this on, left for 5 minutes and pressure washed off, no rust! Super happy.

Great products which are excellent in everything they do, highly recommended 100%.