This is a tenting stand for the Gergoplex Heavy split keyboard to make it more ergonomic. It tilts it at around a 45 degree angle as well as back a bit (which I found to make a large difference). The Gergoplex Heavy is made of three layers of steel which are held together with screws and cap nuts. This part adds an additional layer to the bottom, so using it requires swapping out the screws for M3*16mm ones.