Cable-Spool with extender

This is a simple spool I designed in my beginner-days in freecad.
It is intended for cable and wires, not really filament, but could be used if you want... The diameter is a bit small maybe for filament, but you are the judge for that...

I included teh free-cad files, but i warn you: They are a mess and i wouldnt dare to design something like it like that now... But they work. ;)