Bearings Spool Holder

I designed this spool holder to work with 160 mm diameter filament spools.
The bearings I used for this design are skateboard bearings (with the dimensions shown in the picture). Also known with the industrial standard "608" size.
The size of the bolts and nuts is M8 and a length of 25mm for the bolts.
I also recommend sticking at the inferior side of them one of those furniture legs pad or something similar to avoid a possible sliding.