The stock scroll wheel on Anycubic’s Kossel range is fidgety and provides the bare minimum of usability for what it’s designed to do. I found this strange looking specimen on Thingiverse and what it lacks for in good looks, it makes up for with its highly functional nature. The larger portion allows you to finely cycle through menu items while the smaller center portion allows to quickly scroll through value and option fields in the Marlin firmware printer menu settings.