Proprietary carbon fiber 80mm section carbon clincher rim with aluminum bead and braking surface. Proprietary precision machined alloy hubs with custom depth flanges for extra stiffness. Sapim CX Sprint spokes with hidden nipples for additional aerodynamics. Sealed cartridge bearingsHand built assembly. Includes QR, valve extenders, spoke tool, extra spokes nipples 2 front, 4 rear. Size: 700c x 20H Front24H Rear, Radial front, 2X rear. Color: UD carbon finish with colored decals, black hubs and black spokes. Weight: 2168 grams wo QR. Wheels come standard with a ShimanoSRAM compatible freehub. Campagnolo freehub option is sold separately.