... Description and Application: surface preparation before coating, concrete grinding and polishing, cleaning, renovating wooden floors, removal of coatings, paint, thin ... working efficiency, different grinding disk meet requirements of renovating, polishing, crystal faces and cleaning together, more cost-economical.5. ... disk Φ230mm/9 inch or 185mm/7.5 inch Polishing pad Φ230mm/9 inch or 185mm/7.5 inch 3 ...