Note：the drawing does not represent the real object, just show the parameters of the pinion
2 kinds of M0.3 7T plastic pinion, interference fit 0.8mm shaft, thickness 3.6mm and 4.7mm, outside gear diameter 2.7mm, weight about 0.02g.
Interference fit 0.8mm shaft of 6/7mm coreless motor
The thickness 4.7mm one
Weight about 0.02g