Of the 3M Postits I am already quite accustomed to ... but the price for this useful helper is already really great. Especially when you consider that indeed almost only half can be used, since both sides must be covered with "tape". Ergo is a usable area of just 60 cm.
Because where light items should be quick at hand, the article makes sense but surely. He holds light items securely in place. The surface should be clean and free of grease, of course, before gluing. And the smoother the surface, the better adhere the tape that you should let it harden well before use to ensure that the complete adhesive force is developed.
The tape should be UV and weather resistant and up to 1,000 times its redetachable.
I have used it to fix power strips connected to my granite desk. That worked just fine. The manufacturer shows pictures with Fäusteln ... I would rather resort to a powerful magnetic rail. Because then I have nowhere annoying pimples, neither the handle nor the head. But there are certainly many applications where the tape still makes sense otherwise.
Typical 3M: Innovative, good product benefit, high price = 4 stars!