Profile Design Altair 80 Tubular Wheel Set Altair 80 Tubular Rear 700c x 24H Rear Proprietary carbon fiber 80mm section full carbon tubular rim. Precision machined alloy hubs with sealed cartridge bearings and custom depth flanges for extra stiffness Hand-built assembly. Sapim CX Sprint spokes with hidden nipples for additional aerodynamics Color: UD carbon finish with colored decals, black hubs and black spokes Weight 914 grams