General description These 7 pieces of 4" (100 mm) diamond polishing discs are designed for dry polishing of marble, granite, stone, and concrete surfaces. They feature a flexible design that allows for various polishing forms, making them convenient and less polluting compared to traditional wet polishing methods. Technical specifications Diameter: 100 mm (4") Thickness: 3 mm Working Thickness: 1.5 mm Available Grit: #100