These holders for keyboard, digital piano, midi keyboard allow you to attach the instrument to the wall. It is a great solution to save space in your room. They are made of solid oak. I can make any color and any size for instruments from a small midi keyboard to a big digital piano.
For most of the digital pianos L-size will suit. The holders are attached to the wall with the help of four screws. This construction is firm and reliable. Here is a link for wall mounting of the holders.
https://youtu.be/HH3p84SM78w
Also, you need to buy 4 screws for mounting them on the wall. I will not add them because the walls are made of different materials such as wood, bricks, gypsum plasterboard or many others. Each material requires its own way of fixing which will be effective in holding the keyboard.