... brushes: 1.Material:PP ,horsehair, steel,cooper wire 2.Style:Hand brush 3.OEM twisted wire tube brushes:Manual Operation Tube ... Brushes Tube Brushes and Twisted Wire Tube BrushesBrush silk material with a gold, pp,, bristles, steel, copper wire, abrasive ... tough slag removal.Also called flue brushes, bottle brushes, and twisted wire tube brushes, these tools are designed for long, ...