These multi-purpose rust preventative cloths protects metal surfaces from rust and corrosion with Rem Oil technology. It includes advanced Volatile Corrosion Inhibitor (VCI) technology. VCI vapors bond with water and oxygen molecules to prevent them from starting the corrosion process. This long-lasting barrier penetrates the smallest nooks and crannies. Perfect for a final wipe-down before storing guns, knives, tools, and other valuable metal items. Safe on wood, synthetics, and all metals, ferrous and non-ferrous. Volatile Corrosion Inhibitor (VCI) Technology Instantly protects all metals from rust and corrosion