... "13"17" 4. Won't leave scar Floor polishing pad,stone polishing pad,cleaning padApplicable scope:suitable for marble ,granite ,man-made stone ... pad10",13",17"It's for cleaning and crystallizingGreen pad10",13",17"Softer than the brown pad,and it's for cleaningBlue ... pad10",13",17"Softer than the green pad,and it's for cleaning