It should be noted that the joining device has a piece of the projecting wall (For example, 5 mm). The picture with the power strip suggests that there is very close to the wall.
The tape keeps doing very well by an adhesive layer. I have tested it on smooth surfaces such as plastic, metal and coated wood. On this the tape served its service and acts of force against closure well. On rougher surfaces, it can also function, the adhesive force is, however, somewhat reduced. I tried it on my wallpaper, and the result regarding adhesive strength was not so bad. But it breaks upon removal of the color from the wall.
The tape then abzubekommen again is then not so easy, but possible. The adhesive side is jelly-like and left me with no residue. Reuse proved difficult. The adhesive strength was renewed by applying significantly lower, so I would not risk it.
Repeated opening and closing works well. It's not so much force is required to end the connection. To attach simply press the object against the adhesive tape and the teeth snag. It is not so bad if you do not meet exactly.
For me, a very good working product with many uses. In addition to the mount of tools I have attached the following things with me: LED bars, the Wii sensor under the TV, power strip, toothbrush cup to the wall.