Helical gears 2:1

This is a ‘gearbox’ with helical gears I used for a project. The big gear has 20 teeth, the small gear has 10. So 2 to 1 ratio.The axes are 90mm off the ground.The F axis has an inner diameter of 6,5 mm.The M axis has a diameter of 6,5 mm.No glue required as it has a keyway.