Prusa Core One Spool Holder with removable part which is originali screwed to the printer. 

The part that is screwed to the printer is divided into two parts that screw into each other. The shaft itself on which the filament spool is placed is an original part, so there is no need to print a new one.

Removable spool holder to allow easy placement of dryer box for example PolyDryer from Polymaker in external spool bay using this.