Our metal surface rust removal spray is carefully blended with citric acid, oxalic acid and hydroxyethylenediphosphonic acid. Designed to quickly dissolve rust on metal surfaces and restore surface luster. Easy to use: Shake well and spray 15 cm from the rusty surface. Let it soak for 3-5 minutes until the rust dissolves. Rinse residue with a soft cloth or clean water. Repeat for stubborn rust spots. And it can inhibit rust regeneration and prolong the service life of the metal. Spray design provides uniform coverage for easy and efficient operation. The mild formulation does not corrode the metal substrate and protects the material. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.