... brushes: PA, PBT, PE, PP, PVC, steel wire, copper wire, arenga engleri, horsehair and various animal hair and vegetable ... and so on.Brush hair materials: Copper wire, steel wire, nylon wire, silicon carbide abrasive wire, pig bristles, horsehair, wool, sisal, arenga ... length and thickness of brush hair are optional.Note: We can provide products of different specifications based on customers' drawings ...