Dremel Impeller hose adapter

For Dremel Impeller https://www.thingiverse.com/thing:3361596

Is a hose adapter. and a M20x2 adapter.
Just put it on the nose of the impeller the friction old it well.
bore a hole and put a screw if you want.

Is meant to be printed nozzle up, with the square side on the bed. No support needed, but bore the inside wall after printed.

I provide an STEP file if you want to do another adapter.