Remixed the excellent 6in magnetic duct system by kerngebiet to allow for a 4in version and also add a 5in collar that fits the 6in.

I have added my print profiles for all the files including the originals.

Allows for connecting air hoses witha magnetic coupling with a tpu gasket. uses 10x5 mangnets for the bases and 10x2.5 magnets for the hoses.