Dry box spool roller

Minimalistic spool roller for 4L dry box (flakes container).
As low filament volume as possible.
No screws needed.
Low profile to fit bigger spools inside box.
To build up you need only 2 bearings RS608 type (instead of 4) and PTFE tube for 1.75 mm filament

NO SUPPORT needed.
1 plate
Filament volume: ~61g (20m)

ExtBase which goes inside box through box hole also have "chair" for humidity meter.

I recommend to use silica gel container in center of spool. Due to the low profile, there is not enough space for it below spool (already tested).