Dry Polishing Pad is more aggressive and fast. it is used in polishing stones and concrete. Dry Polishing Pad Great for dry polishing of marble,granite, engineered stone,quartz surfaces -Flexible design allows polishing of inside radius-Optimal RPM: Dry -2000 -Specification: Grits: Pos.1, Pos.2, Pos.3, Pos.4, Pos.5 Diameter: 100mm 125mm 150mm Thickness: 1.5mm Bond : Resin