I bought this stand for my digital piano. After setting up and playing for a few days, the stand collapsed while playing. Piano landed on the floor and partly on my foot. The vibration of playing apparently causes the pin to vibrate loose, causing the stand to collapse. That should NOT happen, but it did. I no longer trust the whole standard and have to look for a new product. Casio recommends this as a set, but don't do it! Not reliable and could cost you your piano and a sore foot.
Coolblue has also handled this well and has also advised Casio to file this as a complaint. I am certainly going to do that.