... brush.Used in side grinding machine and step retreading machineAbrasive nylon carborundum Brushes are used in marble, granite, limestone slate, sandstone, travertine ... effect.It adopts from DuPont TYNEX A U.S.A(Nylon 612 with grit impregnated inside),it has the advantage of ... #,120#,180#,240#,320#,500#.MachineCraft pictures snail lock abrasive nylon silicon carbide brush