General description 7Pcs 5 Inch 50-3000 Grit Diamond Polishing Pad Sanding Disc is designed for polishing various materials including granite, concrete, marble, and glass. This set includes a range of grits to meet different polishing needs, ensuring high efficiency and a glossy finish. Technical specifications Material: Diamond + Resin Quantity: 7 pieces/set Granularity: 50#, 100#, 150#, 200#, 400#, 500#, 800#, 1500#, 3000# Diameter: 125mm / 5 inch Inner Diameter: about 20mm / 0.78" Thickness: about 3mm / 0.11" Compatibility and accessories Compatible with large model 150 and model 180 grinding machines or edge grinding machines Accessory for grinders, polishers, and other diamond tools Installation Easy to attach to compatible grinding machines Usage Suitable for wet or dry polishing Widely used for polishing, restoring, cleaning, grinding, or shaping stone, crystal, ceramic stone, glass, concrete, granite, and marble Other information Package includes: 7 x Polishing Pads