Note:the drawing does not represent the real object, just show the parameters of the gear!
Module M0.3 40 teeth plastic gear, there are nylon and POM two materials, nylon material is beige, two inner diameters, two suitable for 1.5mm shaft , one suitable for 2.0mm shaft.

The white gear is POM material

The white POM gear size

The nylon gear fit for 1.5mm shaft size

The nylon gear fit for 2.0mm shaft size

There is a small hole on the nylon gear for 1.5mm shaft, it is about 0.95mm

Difference in thickness

The white gear fit for 1.5mm shaft is about 0.15g

The nylon gear fit for 1.5mm shaft is about 0.17g

The nylon gear fit for 2.0mm shaft is about 0.17g
