The numbers in each circe represents the distance in mm between the outer and the inner wall for each side.
Requires only 3 grams and lets you know if you have to calibrate your printer flow!
NOTE!
The 0.05mm gap can be able to spin only with 0.2mm nozzles.
Using a 0.4mm nozzle, the slicer will not consider this tiny gap and will fuse the parts together.