Im doing braided goodridge type lines throughout my race car but something so simple is making me think.

i have a brass t peice in the boot were is splits to each caliper.

my t peice is m10x1 on all 3 threads.

i have a fitting here to go onto them but is it the right end ie concave or convex or does it not matter on these.
They both are concave. will this seal ok?


ive attached a pic of both fittings