Purchased on Amazon in April 2025. Used for a few days. [The following is the description from Amazon] https://amzn.asia/d/jjyqsl8 MX ERGO Angle Adjustment Stand, Tilt Stand, Tilt Parts, Angle Adjustment Parts, MX Ergo (50°, Black) Brand: katachi idea Color: Black Compatible Devices: Mouse Mounting Type: Clip-on Model Name: Logicool MX ERGO About this product: Angle adjustment stand exclusively for Logicool MX ERGO and MX ERGO S. Tilts further than the standard 20° tilt angle, allowing for work at a natural hand angle. A stick is included for removing the ball, and it can be stored by magnetic attachment when not in use. Smooth and simple design that fits the shape of the MX ERGO. The stand will not fall off even when the trackball is lifted. Utility model and design patent pending.