I bought these for hangers and various other purposes in my house where there are a lot of metal surfaces. VERY STRONG ADHESION. Sometimes when separating the hooks from the metal, the hooks will detach and the base of the magnet will stick. You have to put them together to remove the magnet. They are strong enough to withstand our heavy winter coats. We have one layer per hook. The magnets won't slip under the coat's weight, even when teens casually grab the coat and run out the door. Magnets leave traces when dragged (e.g. when rearranged or placed for the first time). So, follow the safe removal instructions to avoid unwanted surface damage. That wasn't a problem for me because my surfaces don't bother me. Conclusion: The product worked great for my purpose and I would recommend it for hanging things up to the recommended weight limit.
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