Temporarily label most metal surfaces. This non-adhesive magnetic supply makes it quick and easy to apply and reapply labels to items that often change purposes. Use it for labeling shelves, racks, vehicles, and equipment. Multipurpose: apply and reapply to any ferrous (containing iron) metal surface for any identification need. Strong magnetic backing: thick backing easily attaches to surfaces for quick and reliable installation without leaving behind a messy residue. Indoor and outdoor use: supply stays intact in a range of temperatures indoors and out.