Our rust spray is carefully blended with citric acid,sodium gluconate and polyethylene glycol -400. Specially designed to dissoe the metal rust layer,effectively remove stubborn rust design. The method of use is extremely convenient: shake the bottle before use,and then spray the spray on the rust spot. Cover the rust area evenly,let it stay for 3-5 minutes,wipe it with a spon,and then rinse the surface thoroughly with water. For severe rust,repeat the operat until it is clean. And it can restore the luster of the metal surface to imp the overall beauty,delay oxidat and rust,and extend the service life of the equient. Suitable for car wheels,hardware tools and other ocns..