Using the same EZO bearings we use in the Bolzano hub, the wheel has a very low rolling resistance compared to standard sealed bearing wheels & 5 high quality bearings will ensure a lifetime of outstanding performances. Specification: • Rear Hub: 4 sealed bearing + 1 Needle bearing-24 H • Recommended lasing Rear: 2 Cross • Compatibility: Campy or Shimano • Weight: 944g Fully built up with KLM T10 rim & Pro-Lite Aero spokes