Holder for large filament spools

As You can on the picture I have 2 very large filament spools, and experiments with spoolholder-"feets" with 4 ballbearings gave too much friction.

This model have holders for 2 different sizes of large filamentspools: 52mm inner diameter and 105mm inner diameter. - Do You have rolls with another diameter, You can create some holders and change them whenever You feel like it!

In the middle of the center spool You put a 22mm ball bearing - in each end. And the rod holding it all is a 6mm th