Packing: 4" Diamond Sponge Fiber Polishing Pad 150-10000 grit 8Set The polishing pad is made of high-grade diamond micropowder and polymer fiber. It is sharply polished, stone polished quickly, and has high brightness. Diameter 100mm, total height 13.4mm, inner hole 14.5mm,wet polishing, can not be used dry. The polishing pad has an open mesh structure, good heat dissipation, high-speed polishing without burning the board, and long service life. APPLICATION: The polishing pads mainly used for polishing and cleaning of granite, marble, stone, artificial stone, floor renovation