Andrew Skinner

Does anyone know the correct size for the hard brake lines?---I have been unable to find this info in the Jaguar electronic workshop manual--I need to replace them all and would prefer to do this myself. Found a label attached to the rear passenger line which passes up and over the suspension which is where a leak has developed --code on label is 2W93-2L391-AJ but this all seems to relate to the model/engine size. Any ideas out there?