solid brake pipe size
 

during my MOT, i was told that the solid brake line that goes up over the fuel tank was starting to corrode.
I'm going to buy the line and fittings and a flare kit to re-route a replacement pipe, but does anyone know what size the copper tube is and the fittings that go in to the splitter box and the NS wheel fitting ?
I could probably reuse the fittings if need must but i would rather have new ones

copper line is normally classed as '22 gauge i believe and fittings are all M10x1mm

cheers