Cheap support. Received for free with a Casio LK-120 keyboard.
There is no manual to put together, and at first sight not necessary since only 1 screw needs to be tightened, but make no mistake.
I've been using it wrong for days. The horizontal supports are asynchronous.
You have to fix the 2 legs in such a way that the vertical supports are equal!
Not difficult, you just have to think about it.
It is not very stable, but for a light keyboard it is just enough.
Certainly not enough for the performing arts.