Dual Master Cylinder

Thanks for all of you for the useful info. I changed over from a single pot to a dual and a combination valve for the disc/drum set up. Based on all the feedback it seems that all my lines should be 3/16" (from master to valve and then valve to wheels). I was having a real hard time getting what I needed without having one line from master to valve being a 1/4" and the other 3/16".