Gear knob for custom bicycles

Made this for my bicycle project, just to try how does it work.
separate part´s before printing, it´s more easy to print them that way.

This goes for Shimano nexus 3 shifter.

I printed them with 50% filling but maybe 75% would be better. or even 100%

use normal bolt to fasten the part on, if you have tool´s to make thread´s, even better