Diamond Sponge polishing pads are designed for fast polishing and buffing of soft stone such as Marble, Granite, Sandstone, Quartz, Artificial Stone, Floor renovation. 6 Pad (21 Pieces). 3 Pieces X Grit 300 500. 1000 2000 3000 6000 10000. And 1 Piece of 6″ aluminum velcro pad holder (5/8″-11 Female Thread arbor).