This is a tilt stand for the Logitech MX Ergo / Ergo S. It was 3D printed. What you will receive: * Stand body * Ball removal stick * Mounting magnets (φ6mm) Regarding forward tilt: The advantage is that the hypothenar eminence (the fleshy part of the palm on the little finger side) touches the desk, allowing for a natural grip. With a simple right tilt, the height didn't match, and an armrest was necessary, so I've made adjustments. Notes on mounting magnets: The polarity of the magnets on the trackball side seems to vary depending on the individual unit. Please install the included 6mm magnets yourself. First, attach the magnets to the main body and check the orientation before installing them into the stand's recess. That's all. I've been using this myself through trial and error, so I think it will be helpful. (There is also a 30° version.) Please consider it if you like.