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, color black. The stand can also be attached to the M575SP, which was released in September 2024 and features silent operation and BOLT compatibility, as the shape hasn't changed. 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 stand body. The stand body and tilt parts slide and lock together. Non-slip rubber is attached to the back of both the stand body and the 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 stand, as stands for the M570 and M575 are also available. A tilt stand ver2 with a lever has also been released, allowing you to switch between Bluetooth/USB using the button on the back while holding the M575. Ver2 is recommended for those who switch between PCs. However, while the standard M575 can switch between Bluetooth and USB with one click, the BOLT version of the M575SP requires a long press of the Bt/USB switch button and re-pairing. The standard M575 is easier to use for switching between two PCs using BT/USB. ＜Reference: M575 Stand Ver2 Introduction Video＞ https://youtu.be/ZXixy01VsZs ＜Supplementary Information＞ Due to being manufactured with a layered 3D printer, there are unique layer lines. If the item is out of stock, it may take some time to ship. The mouse shown in the photos 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 sandpaper or a 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 the stand with my own mouse, but the feel may vary depending on the individual differences of the mouse body. If there is a problem, please contact me and I will respond as much as possible, but I cannot respond to problems caused by your own modifications, so please contact me in advance.