I made this "fine" nozzle to really clean 'tough dust' bunnies using my CompuCleaner.com v2.0 canless air blower (AKA Easy Go) . The nozzle has the safety features of an air-escape hole to not stress the motor; but the nozzle is fine enough to provide a high pressure stream of air.
This MAY fit on some other dusters'; but, I have not tested the fit on any other models.
This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/jMRTmZVCeZz
I printed this using the MakerBot Tough printhead and filament, but it will work just as well on any other machine or PLA type.