Riser to raise the original metal knob of the GMMK pro. Allows for easier volume adjustments with less chance of annoyingly pressing the adjacent keys.
It likely also works for the GMMK numpad as I assume they use the same knob. I don't have one and don't plan on getting one though. Worst case you waste 5 minutes of time and a few grams of filament. If you do try please let me know and I will update this description accordingly.
The author marked this model as their own original creation.