... Material:PP ,horsehair, steel,cooper wire 2.Style:Hand brush 3.OEM twisted wire tube brushes:Manual Operation ... silk material with a gold, pp,, bristles, steel, copper wire, abrasive silk etc, are a different range ... called flue brushes, bottle brushes, and twisted wire tube brushes, these tools are designed for long ... , such as cast metal trough, can choose steel wirebrush or copper tube tube brush. 2, ...