SKS F&R VELOFLEXX 55 QR 700/26 MAX 52mm FITS 650BThe VeloFlexx mudguard set combines the stability of a fixed mudguard with the flexibility of a clip on mudguard Due to the continuous nature of the fender profile it is only intended for use with disc brakes The VeloFlexx bridge allows the rear mudguard to be attached at the top of the seat stay without tools using rubber straps At the front, the VeloFlexx is mounted to the fork bridge with a rubberized hook and loop fastener or a cable tie