pictures don't show the new version with slots for bearings

parts:
1x Threaded rod M6
1x Nut M6
1x Coupler 4 mm to 6 mm
1x Motor
1x Pipe d.20 mm
1x Pipe d.25 mm
6x flat head screw M3
4x bearings diameter 10 mm

to fit the motor needs to be:

lenght: 70 mm
outer diameter: 25 mm
fixing holes distance: 17 mm