To mount the cool 3D4U by Miele Borehole Cleaning Aid to an Electrolux vacuum cleaner, you need a 34mm tube adapter.
There are some designs available, but not one fitted good enough for me. So I created my own, including a release mechanism, like the original Electrolux parts have.
You will need the following to put the model parts together
The model was created with FreeCAD 0.21.1.