Mavic cosmic ultimate tubular road wheelsetsuperlight super stiff and now with improved aerodynamics this cosmic ultimate wheelset is the pro racers favourite wheel for any kind of road race the progressive aerodynamic technology gives you low drag and high crosswind stability featuresrimsmaterial 3k carbon fibresheight 40mmdrilling no holes spokes moulded to the rimbrake track carbon with itgmax technologyvalve hole diameter 65 mmtyre tubularetrto size 28 tubularspokesmaterial