These multi-purpose rust preventative cloths protects metal surfaces from rust and corrosion with Rem Oil or advanced Rem Oil Pro3 technology. Both cloths include 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. Features: 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 A step up from classic Rem Oil, the Rem Oil Pro3 cloths provide the best protection against corrosion, friction and wear Volatile corrosion inhibitor (VCI) technology Instantly protects all metals from rust and corrosion