General description These 4"/100mm Diamond Polishing Discs are designed for dry polishing of marble, granite, stone, and concrete surfaces. The set includes 7 flexible polishing pads that feature a nylon backing and a diamond resin bond, making them suitable for various polishing applications. Technical specifications Diameter: 100mm (4") Thickness: 3mm Working Thickness: 1.5mm Available Grit: #50 Usage These polishing pads are ideal for waterless dry polishing, providing a convenient and less polluting option for achieving a high-quality finish on various surfaces.