Good idea but does not take on wood

Great idea that this wall support: not taking at all on my wooden wall I followed the advice of another buyer: I drilled two holes on each metallized plastic element (and yes, it is plastic , not metal) and I screwed the whole wall; Here it holds very well at once!
By cons I saw after my purchase and my boring (too late) on ebay 6 euros cheaper pdf included. Too bad.
Otherwise it is the visually more pleasing to look at wall bracket associated I know my tablet (Samsung Galaxy).
Summary: I would recommend but only if the two supports drill and screw them to the wall, otherwise your tablet can fall without warning with both adhesives provided.