Aero-end for mounting on seat post of bicycle, has recess and/or extension, cavity and another recess, where contours that are same or different with straight and/or curvilinear gradients run to one point

摘要

The aero-end has a recess (4) and/or extension, a cavity (5) and another recess. The aero-end is designed in such a manner that contours run to a point, where the contours are same or different with straight and/or curvilinear gradients, arbitrary in number and are narrower against a driving direction.