Gasmask Adaptor Nato-RD40-Female

Female Gasmask-Adaptor with Nato RD40x1/7 thread. hose-flange has a diameter of 22,5 mm (fits CPAP-hose's ore corrugated rubber-hose's from some fetish-store's) (fits NOT russian (Warsaw Pact) ore chinese hose's) 0,2mm layerhigh withot brim 3 perimeters 100% infill (for best stability) Use at your own risk! Not for commercial use! see also my Male Gasmask-Adaptor :-) https://www.thingiverse.com/thing:7335772 works perfect with my Gasmask-Breating-Tube :-) https://www.thingiverse.com/thing:7334922