A Flange system for 150mm/6" hard Airhoses and 140mm/5.5" Softhoses.
The system is desgind to be easly 3d Printet. I would suggest to print them in PETG because of its UV resistance. Strength is not a concern in my opinion. I printed everything with a 0.6 Nozzel and 2 Walloops.
to lock the Softhose I used this:
150mm (6") Ratcheting Hose Clamp by Pyrex | Download free STL model | Printables.com