Todd is right. I used some of the Toy flare nuts and did my own flare on the ends.
(I figured a single flare was good enough since there is not that much pressure.)

I forgot to mention that Summit also has the flare connectors to go on tubing
although it is for standard AN fittings. For conversion fittings (metric to AN) I
found that TMR (Orange County Earl's Distributer) is real good. George over
there can set you with what you need. He saved me quite a bit of money
coming up with just the right fittings so I didn't have a bunch of fittings in
a row to do my connections. Just bring him the thread end type and tell him
what material you plan to connect the two with.