This fastening knob is made for the Logitech Shifter for the G920 wheel and various others. I designed it because I often move the setup between tables and getting a good tight grip on the table was always harder with the shifter compared to the wheel and I could always feel it in my fingers for some time after.

The design could be improved to save a bit of filament as it has somewhat thicker walls, however the print works for me in the current state and you can modify it if you wish to do so.

Printed in PLA on a BambuLab P1S with a 0.4mm nozzle and 0.12mm layer height.