Using our Vision proprietary hubs, & aero bladed spokes, the TC24 weighs a scant 1250-grams per pair, but is built tough enough for any level of road racing. These wheels are designed with Low Drag Construction with all the wheel components are specifically designed to reduce drag. This allows riders to achieve maximum speed with minimum pedaling effort. Reduced distance between the hub flanges, aero spokes & special rim profiles are the key points.