We've had this Oreck for about a year now (it's our second), and I'm sure I haven't turned it over--ever. And boy was I missing a lot.
You're looking at the roller brush, completely enclosed in fiber. There was barely a bristle that was showing through all the fibery goodness. Did I say it was enclosed in fiber??? Guess I'll be changing my habits and removing fiber pieces from the floor before vacuuming from now on!! Yikes.