Proprietary carbon fiber 52mm section full carbon clincher rim. Proprietary precision machined alloy hubs with custom depth flanges for extra stiffness. Sapim CX Sprint spokes with hidden nipples for additional aerodynamics. Sealed cartridge bearings. Hand-built assembly. Includes brake pads, QR, valve extenders, spoke tool, extra spokes nipples 2 front, 4 rear Size 700c x 20H Front/24H Rear, Radial front, 2X rear Color UD carbon finish with colored decals, black hubs and black spokes. Weight 1701g w/o QR * Wheels come standard with a Shimano/SRAM compatible freehub. Campagnolo freehub option is sold separately. Proprietary carbon fiber 52mm section full carbon clincher rim Proprietary precision machined alloy hubs with custom depth flanges for extra stiffness Sapim CX Sprint spokes with hidden nipples for additional aerodynamics Size 700c x 20H Front/24H Rear, Radial front, 2X rear Weight 1701g w/o QR