For mounting
The brackets are easy to install, ie mounting height pick, drill holes (with a spirit level), drill and fix it with appropriate plugs and screws to the wall. The screws are threaded through the bracket, characterized this bomb stick to the (brick) wall.
For handling
The first time you hang up the guitar I have asked the two shots as far apart. If you then hangs up the guitar, the two shots are pushed down by the weight of the guitar and positioned accordingly.
If one takes the guitar, the recordings remain as they were. That means I have to turn something that guitar, so I can see it well. Maybe it would be better if the shots would turn back again to the starting position, then the guitars could be better taken and returned. When the guitar is not always returns to the same holder but a bit annoying, so a star deduction.
Otherwise I can only recommend the guitar holder.
A good product at a reasonable price!