The Halo Aerotrack wheelset is tested by the couriers and track riders of the world.Built with a black, aerodynamic wide rim the Aerotrack wheel can take daily abuse without issue due to their sturdy construction.It\'s size of 700c, is compatible with all the wheels of road bikes. The tyres recommended are from size 700cx25 to size 700cx35. You will need a 48mm inner tube. And you need to mount a rim tape between the rim and the inner tube to prevent and reduce punctures..