From the Manufacturer
3M Command, the mounting solution that holds on strongly, comes off cleanly! 3M’s patented stretch release technology offers strong holding power and damage-free removal. The innovation – forget about nails, screws, tacks or messy adhesives that damage your walls. Revolutionary Command Adhesive works great on painted surfaces, wood, tile and more. Comes off cleanly leaving no holes, marks, sticky residue or stains.
This fastener holds pictures firmly on the wall, until you want to remove them. Then just stretch the adhesive to release it from the wall and reuse.