Originally Posted by waterrockets

12mm

front spokes: 273mm (radial)
rear NDS: 277mm (3x)
rear DS: 255mm (1x)

Having done the build I can say that you could round all those down to even mm (272, 276, and 254) to save odd size prices on the CX-Rays. We decided not to for this build because you just don't want to take chances (return shipping would have chewed up any savings).