SKS Veloflexx 55 Clip-On Fender Set - 700/26x52 Black. SKS Veloflexx Fender Sets combines the stability of a fixed fender with the flexibility of a clip-on for disc brake bikes. The rear mounts to the top of the seat stay without tools using rubber straps. The front mounts to the fork bridge with a rubberised hook and loop fastener or a cable tie. The frame adapters enable it to be mounted to any fork the can the angle be adjusted.