Our Car Wheel Hub Rust Remover Contains Surfactant, Organic Acid and Deionized Water. It Can Quickly Remove Metal Oxide. It Will Not Cause Corrosion Or Chemical Reaction to Metals. Its Use Method Is Very Simple: Spray the Product on the Rust to Be Constructed, Wipe It with a Brush, Accelerate Decomposition, Rinse It with Clean Water, and Dry It with a Towel. After Use, It Can Quickly Remove Metal Oxide, Remove Metal Rust, Quickly Remove Rust, Clean and Protect, and Restore Metal Luster.