... taiwan2. 2:1 rear spoke ratio,greatly improved the wheel stiffness3. Shimano 9/10 speed,campy 10/11 speedSpokes ... ±30g/pair YISHUN 2013 Newly arriving 50mm tubular bike wheel sets Size:700c -50mm tubularMaterialT700 full carbon fiberHub:High ... field/climbingWheel roundness alignment:≤0.4mmWheel vertical alignment:≤0.3mmWheel center alignment:≤0.5mmChosen, Powerway, Novatec, Pillar, Tektro, Microshift, ...