Designed for interior and exterior use and made from the highest quality materials, the Black detailing brush can stand up to anything you throw at it, and with stronger bristles than the Classic, Albino, or Albino Orange, this is perfect for exterior use! Set in a durable plastic ferrule, the bristles are perfect for any hard to reach surface on the interior or exterior of your vehicle. The rubber handle is both durable and provides extra gripping power over the regular double-lacquered handle. Sizing refers to the width of the ferrule.