This is a tilt stand for the Logitech trackball mouse ERGO M575. This listing is for the stand body (15 degrees) and a 10-degree tilt part set, color is black. The M575SP, which was released in September 2024 and features silent operation and BOLT compatibility, has not changed its shape, so it can be installed. The stand body is fixed by hooking the claws behind the battery cover and then pushing it into the ball hole. The dongle and battery cover can be stored in the main body. The stand body and tilt parts slide and lock together. Non-slip rubber is attached to the back of the main body and tilt parts. The tilt is designed with the base of the little finger as the axis to prevent the wrist from lifting as much as possible. Please make sure you are ordering the correct one, as we also sell stands for the M570 and M575. We also offer a tilt stand ver2 with a lever added so you can switch between Bluetooth/USB on the back of the M575 body while holding it. Ver2 is recommended for those who switch PCs. However, the original M575 can switch between Bluetooth and USB with one click, but the BOLT version of the M575SP has a different specification for the Bt/USB switch button and requires a long press of the button to re-pair. The original M575 is easier to use for switching between BT/USB and using two PCs. ＜Reference M575 Stand Ver2 Introduction Video＞ https://youtu.be/ZXixy01VsZs ＜Supplement＞ Due to being manufactured with a layered 3D printer, there are unique layer marks. If the item is out of stock, it may take some time to ship. The mouse shown in the photo is not included in the product. The detailed specifications may differ from the photos. As this is a handmade product, there may be individual differences, and there may be traces of adjustment with a file or knife. The color of the materials (filament) used may vary depending on the time of year, so the color may differ from the photos. (White may be more cream-colored, black may be matte, etc.) I will check and adjust with the mouse I have, but the feel may vary depending on the individual differences of the mouse body. If there is a problem, please contact us and we will respond as much as possible, but we cannot respond to problems caused by your own modifications, so please contact us in advance.