My left rear metal line blew that goes from the junction at center of rear axle to the rubber caliper line. Its roughly 14 inches long. Not sure if local store has pre bent but is the thread diameter what they reference to when they say 3/8 on the description ?

 

I would think in reference to a brake line, the 3/8 would refer to the diameter of the line itself

 

Ok so yes the line is actually 3/16 now i just need to figure the thread on each end.