SKS Velo 47 Trekking Front and Rear Snap-On Fender Set, 28-Inch Quick Snap-on / snap off feature Rear can be mounted to frame tubes of 25-35mm diameter Produced for Hybrid bikes Profile Width 47mm Optional U-stay kit is available for a more permanent mount To be used with tires having a maximum volume of 42mm Fender width is 47mm from edge to edge.