Kensington Pro Fit Ergo Vertical Wireless/Wired Trackball Mouse K75370/K72196/K75264/K72194/K75326 TB450/TB550 - AliExpress
PERIMICE-517 - Wired Ergonomic Vertical Trackball Mouse – Perixx UK
Nulea Wired Trackball Mouse for Large Hand, Vertical Ergonomic Mouse with Trackball, Easy Thumb Control with 5 Adjustable DPI, Precise & Smooth Tracking, Compatible for PC, Laptop, Mac, Windows: Amazon.co.uk: Computers &