Multi-purpose cloth protects metal surfaces from rust and corrosion with a blend of proven Rem Oil and advanced Volatile Corrosion Inhibitor (VCI) technology. VCI vapors bond with water and oxygen molecules to prevent them from starting the corrosion process. 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..