LF 1/4" JG Valve

[gregzz4]

I don't understand what you're worried about
These fittings work just fine

Just buy them and go with it bud

The only thing you need to know about them is you have to make sure they (the hose) are seated fully to make a great seal
The hose goes into the fitting quite far so you'd be best to test-fit a couple pieces to start off with

And make sure your tube ends aren't sharp so they don't mess up the o-rings inside the fittings