Sale on Aqua Lung Carry on Departure Bag $99.99 CAN
A long time ago , all ports on a scuba regulator were the same size. This caused safety issues when you accidentally put a low pressure hose in a high pressure port.
This hose fitting is NOT standard but has the 3/8" fitting where regulators made in the last 50 years use 7/16 fitting.
This hose will fit but will not work in a low pressure port.