This is an amazing product. I have now used it on a number of rusted tools and pieces (with over 100 years of rust) and in each case they come out looking like the just came from the factory. Just drop them into the solution, forget about it for a day, come back and scrub them off with a steel wool soap pad, and magic. It is one of the few products that has lived up to or exceeded it's advertised claims. The first time you get results, you'll think you're dealing with the "Dark Arts." Great stuff!