Nothing special. Just another stylish extruder knob. I simply got tired of my old one, thought I might just as well share... ;-)
Works with the standard plastic extruder and equally with a modified
as long as the flatted 5 mm axis remains accessible.
...and if you want your Z-axis knob in the same stylish design
Generic PLA or ABS
40+ % (consider printing the central part at 100%)
Any color you like