This is a tilt stand Ver2 for the Logitech trackball mouse ERGO M575. You can adjust the angle by combining the 15-degree main body with 10, 15, and 20-degree parts. This listing includes the stand body (15 degrees) and a set of 10, 15, and 20-degree tilt parts, in white. Ver2 adds a lever so you can switch between Bluetooth/USB on the back of the M575 while holding the body. Two levers, large and small, are included, so use the one that's easier for you. The M575SP, which was released in 2024/9 and supports silent operation and BOLT, has the same shape, so the stand can be attached. 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, requiring a long press of the button and re-pairing. Switching between BT/USB is easier with the original M575. The stand body is fixed by hooking a claw behind the battery cover and pushing it into the ball hole. The dongle and battery cover can be stored in the main body. The main body and tilt parts slide and lock together. Non-slip rubber is attached to the back of the main body and tilt parts for grip. The tilt is designed with the base of the little finger as the axis to prevent the wrist from lifting as much as possible. The tilt parts for the M575 and M570, which are listed separately, share the same joint and can be used together, but the hole positions on the back are different, so the switch operation will not be possible. ＜Reference: M575 Stand Ver2 Introduction Video＞ https://youtu.be/ZXixy01VsZs ＜Supplement＞ This product is made with a layered 3D printer, so it has unique layer marks. If the item is out of stock, it may take some time to ship. Because it is a handmade product, there may be individual differences, and there may be traces of adjustment with sandpaper, knives, and lighters. The mouse shown in the photos is not included in the product. The detailed specifications may differ from the photos. The color of the materials (filament) used may vary depending on the time, so the color may differ from the photos. I will check and adjust it with my own mouse, but the feel may vary depending on the individual differences of the mouse body. Please understand.