This is a Mounting system for the TM80S Airbrush pump found on places like Aliexpress. Designed for the older IKEA 52mm legs.
The design was inspired by https://www.printables.com/model/151755-airbrush-and-compressor-mounting-for-ikea-skadis. I grew to hate dragging the hose over my desk where my painting supplies sit. Now it's out of the way and just as convenient if not more.
The clamps use M3 cap head screws and nuts people with FDM printers may have laying around.
The tabs for the clamps have a built in 1 layer brim that can be cut off after the print completes.
The author marked this model as their own original creation.