Note：the drawing does not represent the real object, just show the parameters of the pinion

Object, M0.3 10T plastic pinion, interference fit 0.8mm shaft, thickness 3mm, outside gear diameter 3.6mm, weight 0.03g.

interference fit 0.8mm shaft of 6/7mm coreless motor

another side

thickness 3mm

With 12/36T dual gear and 8T gear