When you don't want a film of corrosion inhibitor on the tool itself but you still don't want it to corrode, put one of these packs in the toolbox. This product is environmentally friendly, user safe and nontoxic, yet it electrochemically bonds with metal and forms an umbrella around the metal to seal out moisture and air that causes corrosion. It's great for toolboxes, gun cabinets - anywhere you keep ferrous items that you need to protect. Three per package. Imported.