This is a 20mm long cylinder designed to thread on two bottles of ketchup to aid in transfer from one bottle to the other. Developed in FreeCAD, no supports necessary, please take appropriate precautions when exposing food to this. My other version that fits an M33 thread is longer. This one fits snugly between the two bottles, with the bottle tops touching eachother, so little food exposure to the actual part.
The author marked this model as their own original creation.