Silicon Carbide Highly Safe Efficient Grinding USA Quality Flap Disc Sanding Disc. Silicon Carbide Material: High-quality silicon carbide abrasive for effective grinding and finishing. Versatile Applications: Suitable for marble, granite, concrete, and non-ferrous metals. Multiple Sizes Available: Diameters range from 50mm to 250mm for various needs. Wide Grit Range: Grits from 36# to 400# for stock removal to fine blending. Vibration Absorption: Flexible cotton cloth and reinforced backing reduce vibration. Quick Change Design: Simplifies disc changes for improved operational efficiency. Customization Options: Custom model numbers, backing, and other specifications available. High Stock Removal: Coarse grits perform well on heavy stock removal tasks.