Features: 1. **Effective Anti-Rust Formula**: Our cleaner features a powerful blend of citric acid and sodium gluconate, specifically designed to combat rust and restore the shine of your car's exhaust pipes without causing damage. 2. **Easy Application**: Simply spray the cleaner on a cool exhaust pipe, wait 30 seconds, wipe with a cloth, rinse, and dry. No complicated steps, just quick and effective cleaning! 3. **Long-Lasting Protection**: After cleaning, your exhaust pipes will stay cleaner for longer, helping to maintain their appearance and prevent future rust build-up. 4. **Safe for All Metal Surfaces**: Formulated to be safe for all types of metal exhaust pipes, ensuring that your vehicle's finish remains intact while achieving a brilliant shine. 5. **Compact 30ml Size**: The convenient 30ml size is perfect for on-the-go cleaning, making it easy to store in your car or garage for quick access whenever you need it. Our multi-functional metal anti-rust cleaner for car exhaust pipes (30ml set) contains citric acid and sodium gluconate. It can restore luster, will not damage the exhaust pipe and is easy to use. Its usage method is very simple: Please put on rubber gloves before use, then evenly spray the cleaning agent on the exhaust pipe (make sure the exhaust pipe cools to room temperature), wait for 30 seconds, wipe back and forth with a cloth, then rinse with plenty of water after cleaning, and finally dry with a dry towel. And it can remain clean for a long time.