Some pros: a large number of bolts, nuts, washers, self-tapping screws for installation in the wall. Reliable fastening of an arm in a wall. Possibility of mounting both at 4 points in the corners, and at 2-3 in the center Has some cons: Fastening the TV plate to the carrier to the bracket with only one bolt and on the "ring": because of this, the TV sags on the support ring and can fall off - you need the help of a second person to align it horizontally