Hello all im new to the forums and have a question regarding my 91 accord coupe i am replacing brake lines from my master cylinder to my proportioning valve and i know they are 3/16 brake line with m10 1.0 fitting but i need to know the correct flare type is it a metric iso bubble flare or an inverted flare my local auto parts store sells preflarred lines in various sizes but the only one they sell is a Japanese poly armor pvf steel line with inverted standard flare they dont sell any Japanese threaded line with bubble flare only European with has a different style fitting and thread pitch