TheWheel Works Medium Brushis the idealbrushto remove fluids, grease, oils and other contamination from hard to clean surfaces like wheels, engine bays and undercarriages. How to use: 1. Rinse wheels with water to remove loose dirt and soften tough grime. 2. Spraywheel cleaneron wheels, tires, brakes, and suspension components. 3. Let sit to break down filth and grime for several minutes. 4. Usebrushto gently remove dirt and grime. 5. Rinse away filth, cleaner residue, and soap with water. 6. Dry with a cleanmicrofiber towel.