Super cable channel, on wallpaper with screw!

I ordered this cable channel, as it is narrow and unobtrusive. He really is hardly noticeable. Optical Super. Delivers what it promises. Since I have however the channel laid on woodchip wallpaper, I have every meter even drilled a screw. Hällt super, you just have to take care, that the screws have a flat head, otherwise not much space for the cable. For adhesive function on other materials, I can not say unfortunately. Mounting easy. Super optics. Price is right.
Absolute buy recommendation!