Disclaimer: I am not an expert and have only dealt with this briefly. I'll answer anyway. Correct me if I say something wrong *head down*. So: 1. clarify wall: Concrete wall or brick wall? With a concrete wall, I would use metal/expandable anchors. They can carry up to 100kg. But it's probably a brick wall anyway, which is less load-bearing. The screw should be long enough to penetrate a little deeper into the brick. It still has air chambers in it and stuff. Matched sets consisting of screws+plugs generally bear better than non-sets/universal stuff. The maximum load is stated on the package depending on the wall type. I would use the thickest screws that just fit into the hole in the bracket and reach to about the middle of the wall. Caution: Do not drill into any water/power pipes. These normally run parallel to connections/switches. With concrete, there may be reinforcing iron in it, i.e. you may have to re-drill elsewhere.

If I remember correctly, everything is included