Vapor Phase Corrosion Inhibitor Paper - Ferro-Bright Protects iron products from rust Use this paper to wrap or place iron products in to protect them from rust. (This does not guarantee 100% protection) Size: Approximately 21cm x 19cm Quantity: 15 sheets This is a used item. Please note that there are creases on both ends of the paper. The paper will turn white as the vaporizing process progresses. Please check the 5th photo. The paper color is still dark, indicating that the vaporization has not progressed much, so how about using it to prevent rust on your metal products? Thank you.