something odd

[Black04si]

well i was replacing the slave cylinder since i thought it was bad couldnt seem to get all of the air out of the lines the hard line that hooks the slave cylinder to the rubber hose was broke in half just the plastic coating was holding it together have any of u seen this b4

[Deadphishy]

I have not, sorry :(

[talonXracer]

That usually occurs when someone had pulled the drivetrain and forgot to disconnect the line and bent the line. Then the mechanic bends the line back into shape and creates a crease in the line, eventually it will rupture.

Or a manufacturing defect.