Keep these Duebel what they promise

A 49 inch television had to be suspended because I knew that the wall is not massive I ordered these to anchor with the wall mount for the TV.
What should I say much about it? Hole drilled Duebel pure, wall bracket and screw it in. It holds bombproof! Before one of the anchors "let go", is rather the house rumherum a.

Full recommendation for this. Priced also perfectly acceptable and the material is also stable and heavy.