Detailed Product Description Dry Polishing Pad Great for dry polishing of marble,granite, engineered stone,quartz surfaces and concrete-Flexible design allows polishing of inside radius -Optimal RPM: Dry -2000-Specification:Grits: #50 #100 #200 #400 #800 #1500 #3000 Buff Black Buff White.Diameter:50mm, 80mm,100mm, 125mm , 150mmThickness:1.5mmBond : Resin