Fastens with 2 points of quick release and chain stay, one end secures with quick release, and the other end is mounted with a P-band to the chain stay, avoiding the disc mount. The P band comes with a large (diameter 31mm and small (diameter 23mm) to fit the shape of the chain stay, and can be attached to both flat mount and post mount. The length of the legs is cut to fit the body and includes washers for fine adjustments.