The C-Shine diamond floor polishing pads are designed to be more abrasive resistant so that they last longer on concrete and terrazo. They offer a high gloss finish. Newly designed pattern will remove swirf and allow polishing in those difficult angles in corners and walls. Thickness of the pads is 11mm. The pads can cover up to 10,000 sq. ft of surface. A set come with a total of 7 pcs including 50 grit, 120 grit, 220 grit, 400 grit, 800 grit, 1500 grit and 3000 grit.