Sonax (230241) Wheel Cleaner Plus - 16.9 fl. oz. Acid-free and pH balanced, environmentally-friendly formulation Sprays on clear, turns red as dirt and grime is penetrated Safe for use on wheels: aluminum and alloys; painted, anodized and clear coated 30 percent Stronger than SONAX Wheel Cleaner full effect Size: 500 ml (16.9 fluid ounce)