I liked the product. It fits for my TCL 55 inch 4k tv. Actually, rather than TV size, see the size at the back of the tv where it is bolted to your TV. That size for my tv is 200mm X200mm and fits perfectly. The stand says it supports VEGA standard of 100x100 to 400x400mm, however, the technician from Samsung told me, Check before buying whether it really fits for more than 200mm TV sizes.
Pros -> It fitted perfectly on the wall. The swivel is working fine and I am able to watch my TV with the certain angle from my dining space. The stand is sturdy and the bolts given of 3 inches are of good quality due to which it is strongly fitted into the wall. Cons-> The wall to TV distance is 55mm, (i.e.5.5cm) which may be concerning to certain people. The small screws holding the swivel may not be that strong and can deteriorate over the period.