Frankfurt Antique Abrasive Stone Brush 1.Adopt from DuPont U.S.A(Nylon 612 with grit inside) 2.High speed of aggressive Frankfurt Antique Abrasive Stone Brush Abrasive Brush are used in marble, granite, limestone slate, sandstone, travertine and so on. Through grinding the surface of the stone, it could get the archaized effect.It adopt from DuPont U.S.A (Nylon 612 with grit inside),it has the ...