Light wall spool holder | 7mm or 8mm rods

From an idea of: https://www.thingiverse.com/thing:2016985
I have made this wall spool holder for remove weight from printer, that can increase oscillations during print and create defect on printed object.

7mm or 8mm rods version on files section.

You need 4/8 608 bearings (amazon have it)
You need to print for every bearing a "Tire", get it from: https://www.thingiverse.com/thing:1832235/#files
If you use 7mm version you can print also the washer (vase mode, without top and bottom) t