This is a vacuum adapter that was designed for a Miele canister vacuum.
The original intent was to use it to vacuum out the lint trap hole in a dryer but it also works well for vacuuming between the seats in a car.
Dimensions for reference in case you want to check if it works on your vacuum:
ID: 34.6mm
OD: 40.2mm
Overall height: 208.75mm
Print Settings:
Material: PLA or PETG (or really anything)
Layer Height: 0.28mm (any height works but I needed it quickly)
Wall Count: 2
Infill %: 20
The author hasn't provided the model origin yet.