New Omega 75 CF Carbon Fiber Tank Question

[Datameister]

What is the technical name of the large fitting on the air hose that screws into the Omega75 CF Carbon fiber tank called?

 

[Humdinger]

What is the technical name of the large fitting on the air hose that screws into the Omega75 CF Carbon fiber tank called?

It's called a 300 DIN fitting.