universal filament spool holder MK2

Upgraded universal filament spool holder.
It allows to use also 30 mm diameter hole spools. It has smaller thread M28x3 so it is suitable for that small hole spools. So it can hold from 30 mm hole spool up to 60 mm hole spool. And also can keep narrow and wide spools withou any problem, thread is lenght enough.
Printed and tested.