This is using the 20mm connector and the milk bottle funnel lid mashed together in windows 3d builder.
For using Milk bottles with bird food.
Remix combining https://www.thingiverse.com/thing:4327797 and 20mm connector from https://www.thingiverse.com/thing:1678790
Category: Containers
The author marked this model as their own original creation. Imported from Thingiverse.