VCI Chips are chipboard pieces incorporated with a corrosion inhibitor coating. Comes in a compact size. This makes the chip convenient for enclosed areas and packaging. The corrosion inhibitor activates upon contact with exposed metal (ferrous, non-ferrous, and multi-metals). VCI Chips also help prevent the deposit of oxygen, moisture, dirt, salts, and other contaminants onto the surface of the metal. Both the Nox-Rust Vapour Wrapper VCI Chip and Uniwrap VCI Chip is a multi-purpose corrosion inhibitor paper chips. However, the Nox-rust Vapour Wrapper is suitable for protecting only ferrous metals such as steel, iron, cast iron, and other ferrous metals. In contrast, Uniwrap is suitable for ferrous, non-ferrous, and multi-metal applications.