I need it for Tomatosticks from Aldi Germany. 
They have a Diameter of 16mm. See the difference in the 1st. Foto.
This ist a new Drawing in FreeCAD (0.21.2)

Black = Original from Serisar
Orange = New from me.

Attention:The 3mf-File is made for Prusa MK4

Layer 0,2mm
PETG (PLA should be work too)
 

Thank you for the Idea Serisar

Update 2024.04.18: New stl- and 3mf-Files. The older are to big. (FreeCAD reinstalled)
Update 2024.05.19: Replaced the Parts in the 3mf-File, a little bit. Thank you @Nevercan
Update 2026.06.29: Made it new with FreeCAD 1.1.1
Parameterizable Size:
Look to Drawing (Colored circles):

Could be changing with VarSet (Colored rectangles):

I doesn't check it with all diameters.
Layer 0.2mm
Nozzle 0.4mm
PETG (If you used it Outdoor)
Support: No
PrusaSlicer: 2.9.6
Attention: The 3mf-File was made for Prusa MK4S