For 700C Wheel. The DeFender R1 and R2 offer road riders great protection from water and road spray in a tough, versatile lightweight package. The fenders are constructed of lightweight polycarbonate with stainless steel struts for stiffness and durability. The unique quick release mounting system is fast and easy and requires no tools using a combination of flexible rubber connectors, adjustable seat stay bands and center bolt clip to optimize strut alignment and positioning. Fits road tires up to 700 x 25c.