The INHIBITOR Rust Preventative System is the most scientifically advanced formula for protecting all metal surfaces from rust and corrosion. Our military grade vapour technology is able to penetrate into the smallest cracks or crevises blending with moisture and oxygen to stop rust and corrosion in its tracks. For use in all marine, farming, tool, household and shooting equipment protection applications. The Rust Preventaive Plugs are designed to be put into closed areas such as tool boxes, firearm storage lockers/cases by using the double sided tape provided with the plug. By simply twisting the base you fully expose our concentrated wick and thet are working right away.