jakehoe 100ml/Box Metal Surface Rust Remover, Removes Rust From Stainless Steel Surface, Cleans Metal Hardware, Rebar Degreasing And Rust Removal. Highly Effective Formula Quickly Penetrates And Dissolves Rust, Effectively Restores Metal Surface. Versatile, Suitable For Various Metal Surfaces Including Rebar, Cast Iron And Copper. Apply An Appropriate Amount Of The Product Evenly To The Rusted Area Of The Metal Surface; Let It Sit For About 10 Minutes, Then Wipe Off The Residue And Rust Stains With A Sponge. (Random Delivery Of New And Old Versions)