42 Pieces of 4 (10mm Thick) Floor Pad. Thickness Diamond Polishing Pad for granite marble concrete terrazzo. 12 Pieces X Grit 50. 6 Pieces X Grit 100. 200 800 1500 3000. Description of the 10. Much aggressive to do mirror effect, -Velcro backed, can be attached to the floor polishing machines, -Used dry or wet. Designed for floor machines to polish, restore and maintain the concrete floor, terrazzo floor and granite floor.