Diamond pads for cleaning, shining and periodical maintenance of surfaces #1 Yellow Deep PolishingMaximum abrasivity for removing deep scratches, resins, glues, wax coatings and grease or oil stains. #2 Pink SmoothingMedium abrasivity for removing surface scratches and for a deep cleaning of the floor, getting the surface ready for further treatment stages. #3 Blue ConditioningVery low abrasivity for cleaning and obtaining a semi-brillant finish of the surface, leaving it ready for the daily maintenance. #4 Grey Shining And Maintenance:For an ultra-shinny finish and for the periodical maintenance of the surface. It can be used on all kind of marble, terrazzo, concrete and synthetic surfaces.