Wingnut đơn giản cho Hex Brass Standoff M3

I could not find any winged insers for these hex standoffs and I never use the small ones anywhere else.
Feature:
- I have added a hole at the end so you can screw any M3 screw to it if needed.
- requires almost no filament
- easy to print
- I used the ~5mm tall ones but basically they fit any length.