Works on all metals - aluminum, gold, copper, silver, copper, magnesium, diamond plates, and all types of uncoated metal wheels. Proprietary strong formula removes years of oxidation quickly. Use it as a super smooth coating for sensitive metal surfaces like jewelry. Applied by hand or machine including orbital and rotary polishes. Hybrid formula allows you to control cutting and polishing. Does not contain ammonia or other harsh chemicals or solvents. Eco-friendly technology, environmentally friendly, compatible with 65 substrate and volatile organic compounds.