Diamond dry flexible polishing pads is specially designed for polishing granite ,marble . Grit :50#,100#,200#,400#,800#,1500#,3000# buff diameter size:4"(100mm) 5"(125mm) 6"(150mm) seven pieces/set (or include the buff as requirment) Advantage :1. it can work well without water-cooling 2.the thickness of working layer is double of general pads 3. long life time ,not easy to wear out and no burn point left during working. 4.white buff can not only use for polishing granite but also for polishing white marble 5. it also can not dye to light color stone 6.quickly identify the grit size. 7.easy to use and environment friendly.