Our black car wheel scratch repair pens contain polyurethane resin, solvent paint, aluminum silicate. It can easily repair scratches and small dents on the wheel hub. The unique rust-proof and waterproof formula effectively protects the surface of metal, aluminum and steel rim. Its use method is very simple: 1. Clean the scratched area; 2. Before use, shake the repair pen to mix it evenly. 3. Apply repair solution to the scratch. 4. After applying the repair solution, let it dry naturally. The meticulous repair effect ensures that the surface is smooth and smooth, and maintains the overall beauty of the vehicle.