Hey I’m trying to set up my mig welder for gas but it seems like getting the gas fittings is impossible in the photo the fitting on the right is off the welder and the fitting on the left is off the argon regulator. The mig welder one is 6mm inner diameter and 8mm outer. If I can find a gas line that will go on that and a adapter for the regulator that would probably be best. Any thoughts?