The file 'Flask Funnel 9.5 Mm 3D Printer Model' is (stl) file type, size is 12.0KB.
Flask openings =/< 9.8 mm
Funnel width is ~ 9.5 mm
Other funnels were too wide for my personal flask.
This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/9E0vSC8LQtW
flask_funnel.stl | 48.9KB |