Adjustable Tube for Dosing

This was an experiment if I can do this on my own, and it seems to work. Just create a Jet Nozzle and as much connectors as you neet. The half inch should be produced with multiple layers so you can cut a 1/2" widworth threat to it.
Currently producing parts, picture will follow.
Step files available, if you want them :)
The inner and outer ball have 1mm difference, this works fine with my printer, the parts fit good, but can be moved.