How are cigars selected for tubos at the factory?

[zacca]

At the factory level, are cigars destined for tubos rolled or selected differently (draw, wrapper tolerance, bunching), or are standard production cigars simply diverted into tubes after rolling?

[Puros Y Vino]

From what I understand, they're the ones leftover from rolling sessions that didnt meet wrapper shade uniformity to make full boxes.

[dopECM]

Funnily enough, the Bolivar Royal Coronas Tubos I have or Hoyo de Monterrey Epicure No.2 have a nicer wrapper (according to my taste) and feel richer than the ones coming from a box.