Speaking of cheap couplers... when I was a kid, I 'busted tires' at the
local Sears auto center.

They had 4 tire racks, with 2 huge hose reel's over them on the
ceiling... maybe 20' off the floor.

Those couplers were always a mess, racks were lowered on them, they were
driven over, used to fill tires (without a chuck) and on and on.

One day, they put on new cheap female couplers, from where I don't know.
After a week or so they were worse than the old ones, all bent up and
leaking. Then someone popped an impact off one, and the female coupler
didn't close. Of course there was 4 customer's cars, and 4 or 5 people
within range of that flailing (175 psi iirc) line, snipped

Did they use 175psi on lug nuts?? that would explain why I had a hell of a
time getting those off by hand! (dont carry impact wrench and compressor in
my truck, although it would be handy!)
walt