Minimalistic Spool Holder

Hello!
This is my very minimalistic spool holder for standard filament rolls. It needs to be mounted to a table. It is designed to be used with any kind of threaded M8 rod + 607 bearing based spindle holder.
Use it with a 100mm piece of M8 threaded rod which will lay on the one column and be inserted into the top of the other one. So it is easy to "load" without any tools and even if the filament is a little stuck the roll won't jump off the holder.