They're pretty much useless. They might keep my car keys, but that's about it. I only used them to hang things that weren't very heavy because I knew they couldn't be very strong, but they couldn't even hold a hollow plastic clock or a small painting on canvas or even a few bits of jewelry. . I stuck the hooks where I wanted. On a clean smooth surface. Hold them in place for 30 seconds, then leave nothing on them for 30-60 minutes. Then I would hang something light on them. From an hour to a day, everything I hung fell off. The glass of the watch shattered all over the floor and the glass chain broke too. Luckily nothing else I hung was too fragile. I would not recommend it. Next time I'll try the branded command strips.
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