Air nozzle for laser engraver machine.
It fits to "Laser Tree, Model LT-40W-F23".
Basically it's a remix of https://www.thingiverse.com/thing:5652409 with removed thread and longer pipe. It was very problematic to assemble the previous model even if the 0.1mm was used as a resolution.
nozzle.stl | 1.1MB |