Hubs Track Madison contrast black

front hubs .- TRABOCCHI  mechanizes these components from round 6061 aluminium round bar with a metal section of  71 mm.The hub housings  go through four different  processes  of mechanization before being finished, resulting in a bright polishing exposed to a process of anodizing in glossy black ,with an additional fifth mechanizing process on both two side ( faces ) in bright polishing.with 6000ZZ sealed and armored roller bearings, providing lightness and smoothness when turning Forward  the final diameter of the flanges  is 70mm , opening between ends 100mm .