I have used it on an old 42-inch LED and a new 55-inch OLED. It supports the 55-inch better, as on the 42-inch, due to its size, it didn't always stand straight in front of you and with the slightest movement, you had to constantly align it with your hands, which was annoying. However, because the base is very heavy, it is somewhat difficult to position. Also, it needs to be installed with the level facing upwards, if it is installed upside down, the top part of the TV leans forward and you will need to place it differently.

Very sturdy construction. The built-in level is very useful.
I used it to mount a 42" TV. Relatively easy installation. The package contained all the necessary screws. The packaging states that it is suitable for TVs up to 55"! Be careful if you plan to hang the TV high. The stand has an upward tilt and I had to unscrew one arm and screw it in upside down in order to reverse the tilt. Maybe I would have liked 5-10 degrees more tilt on the vertical supports.

Update: After 2.5 years of flawless support for the 42", it now comfortably holds a 55" TV weighing 19 kilograms.