Ruota 20" MTB posteriore

    ****   *******     *     *******  *******     *     
   *            *     **          *        *     * *    
  *            *     * *         *        *      * *    
  ******      *        *        *        *      *   *   
  *     *    *         *       *        *       *****   
  *     *   *          *      *        *       *     *  
   *****   *        *******  *        *        *     *