Spool_Holder No supports

Put this together because the inner diameter of one of my spools was a little too small for the holder I was using. Plenty strong enough for 1kg spools. It can hold spools with a 54mm diameter inner hole. 69mm spool width max, can probably push that to 70. I plan on making a second with the same design that can hold wider spools. Suggestions on size are appreciated.

This has been printed, tested and will work.

Requires:

2x 608 bearings
3x M4*12 bolts
3x M4 Nuts

Printing:

Print with your preferred settings.

20% infill though I expect 10% is fine.
No supports are needed.
Standard Quality - 0.2mm

With my settings Cura tells me that it takes 5 and a half hours, 11.19m of filament and weighs 33g.