This is an adaptor designed to be connected to the Tornador, or a Tornador-style, cleaning gun. As seen in the photos, it has two holes, in the wide one you connect your cleaning gun (i.e. Tornador) and in the second hole you connect your wacuum. It is already used many times in various car seats from a car detail expert and did a fantastic job. My design seems bulky but it's made to last for long and does not affect it's usability. I have also uploaded two photos with suggested orientations.

Here are some useful dimmentions:Vacuum input diameter: 35.5mmCleaning gun input dimeter (small hole): 15mmRecommended slicer: Ultimaker Cura

If you need and further information or probably some change on the dimmentions of the holes to be perfectly fitted to your vacuum cleaner please feel free to ask!

Thank you,Andreas