Mini actuator for NEMA17

Hi. This work is an electric actuator for NEMA17.
It's not complicated, very simple.
This work need some parts.
・Spacer with a height of 12mm
・M3*8 bolt and M3 nut

Pull torque is about 1～2kgf.
If you want to know detail of torque, please watch this video!

https://www.youtube.com/watch?v=3n_ZfC9AdOg
https://www.youtube.com/watch?v=cNPqO2BJCOY