At first sight they might look like road wheels...but they are not! The main & actual difference apart from &34;CX&34; following &34; Racing 7&34; lies inside the new hub with a double gasket to protect bearings from dust & mud guaranteeing the smoothness & long life of components. The new double-coating hubs were designed for straight spokes: aluminum made & with a large flange on the driveside of the rear wheel markedly increasing reaction. The front wheel has 20 steel spokes with 2mm round section. The spokes of the rear wheel have a 2:1 ratio. Two-to-One TM: 8 2mm round spokes radially laced for the left side; while on the driveside there are twice as many straight spokes with the same 2mm section. In order to control wear in Racing 7 C Xs Fulcrum has included the new Wear indicator system. Racing 5 CXs are compatible with Campagnolo Shimano Inc. & Sram Co. transmissions. Nominal weight*:front: 828 grrear: 1021 gr* average weight &40;tolerance +/- 5%&41;: does not include the quick-release & it refers to the lightest configuration