"Ulti-Stand" universal, heavy and strong table spool holder!

I'am glad to introduce you my latest design of table spool holder.
I needed spool holder which will be enough universal for many different types of filament spools and their dimensions (inner & outer dia) and simultaneously have ability to quick-switch of spool (no uncrewing, or so..).
Holder is bolted from several parts so it can be printed on platform of size 200x200mm easily!
- Heavy enough to hold almost empty spools (no flipping)
- Very quick replacing of filament
- Universal!
- ability to install bearings for improved functionality (I recommend)