... ,36#--500# Abrasive Brush are used in marble, granite, limestone slate, sandstone, travertine and so on. Through grinding the surface of the ... granite for first step.Steel,Steel+36#,36# remove loose material on the surface as well as shaped stone surface.46 ... #coarse grinding120# ,180# ,240# rough polishing320 #,500# fine polishing abrasive nylon brush,polishing brush