This is a tilt stand for the Logitech trackball mouse ERGO M575. This listing is for the stand body (15 degrees) and a 15-degree tilt part, color black. The M575SP, which was released in September 2024 and supports silent operation and BOLT, 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 unit. The stand body and tilt parts slide and lock together. Non-slip rubber is attached to the back of the main 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 we also sell stands for the M570. We also offer a tilt stand ver2 that adds a lever so you can switch between Bluetooth/USB on the back of the M575 while holding the main unit. Ver2 is recommended for those who switch PCs. ＜Reference: M575 Stand Ver2 Introduction Video＞ https://youtu.be/ZXixy01VsZs ＜Reference: M575SP Back Button Specification Change Verification Video＞ https://youtu.be/XxajyN7fQqA ＜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 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 sandpaper and knives. 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 my own mouse, but the feel may vary depending on the individual differences of the mouse itself. If there is a problem, I will respond as much as possible if you contact me, but I cannot respond to problems caused by your own modifications, so please contact me in advance.