General description These 7pcs Diamond Polishing Discs are designed for dry polishing of various materials including granite, marble, tile, stone, and quartz. With a diameter of 100mm (4 inches) and a thickness of 3mm, these flexible pads are ideal for achieving a high gloss finish on edges. They are reinforced with nylon backing for durability and easy disc changes, making them suitable for different shapes of polishing. Technical specifications Diameter: 100mm / 4 inches Thickness: 3mm Workable Thickness: 1.5mm Available Gravel: #50 Maximum Speed: 4000 rpm Recommended Speed: 2500 rpm Installation Must be used with polishing equipment such as polishers, angle grinders (high speed is not recommended), or hand sanders. Usage Dry polishing without water, providing a convenient and eco-friendly solution. Wear protective gear for eyes, nose, face, and hands during the polishing process.