8 Inch 200X25X31.75mm Green Silicon Carbide Abrasive Grinding Disc Wheel for Bench Grinder and Sharpening Carbide Tools. High Precision Grinding: Cylindricity <0.02 and Circular Degree <0.01 for superior surface finish. Optimized for Carbide: Specifically designed for sharpening carbide tools with fine grain performance. Cleanroom Manufacturing: Produced in Class 100,000 Cleanroom with advanced computer-driven lines. ISO9001 Certified: Quality assurance backed by ISO9001:2008 certification. Versatile Grit Options: Available in Grit 46, 60, 80, 100, 120 for rough grinding to sharpening. Standard Dimensions: 8 inch (200/205mm) diameter, 25mm width, 31.75mm bore size. High Speed Rating: Safe operating speed up to 35m/s for efficient grinding. Customizable Specs: Hardness, speed, and bond types can be customized per requirements.