ok guys, need some help with this. trying to replace my clutch lines running from the master cylinder to the slave cylinder. now i can buy lines from the auto store, and i so did by purchasing the first section of main line running from the master cylinder to the splitter/adapter on the fire wall. the second line is whats killing me. i dont know the size of it and no shops around me can seem to tell me exactly what it is.

i also though about just going with a braided line, but have no idea where to even look about getting one of them.