2 Metal Safe Vapor Cubes Corrosion Inhibitor

Protect your brilliant and toned coins no matter what type of storage container you use. Corrosion inhibitor works with all metals. Metal SAFE block deposits an invisible protective molecular film on all metallic surfaces, and provides protection for 33 cubic feet of enclosure space (a 2 foot radius) for one full year. Each capsule has a shelf life of 3 years, and is kept sealed in its original poly-bag.