AutoSmart Wheel Cleaner, Purple Iron-Free, 16.9oz/500ml + FREE Microfiber Towel Same product, much cheaper than Iron X! SAVE LOTS OF $$$$ Can be used on paint, plastic, chrome, glass, and alloy wheels When sprayed it turns deep purple when reacting to the particles Acid Free, pH Balanced, Safely breaks down ferrous metallic contamination NOT FOR USE ON NUBUCK, SUEDE, FABRIC, AND CONVERTIBLE TOPS