Suitable Size: 8 inches in diameter, 1 inch wide, bore 5/8 inches, 180 grit. Stainless steel body, smooth surface, rust-resistant, high hardness, high compressive strength, good wear resistance, and long service life. High Performance: Electroplated diamond flat grinding wheels are designed for grinding and cylindrical grinding of hard alloy measuring tools, tungsten steel, high-speed steel, alloy steel, glass, gemstones, jade, ceramics, magnetic materials, molds, and stone materials. Upgraded Design: Compared with traditional diamond grinding wheels, CBN grinding wheels generate less heat and are suitable for hard alloys, high-alumina porcelain, optical glass, gems, semiconductor materials, and stone materials. Professional Use: Designed for precise grinding on common bench grinders. Recommended operating speed: 1000–3600 RPM. CBN offers high compressive strength, low heat generation, excellent shape retention, and extended service life. Compatibility: Precision-engineered for exact fit—no truing or dressing required. Optimized for budget-friendly grinders. Aluminum arbor reducing bushing provides smoother operation than plastic alternatives. Ideal for high-speed steel grinding. Type: 180 Grit Color: Silver Material: Steel Size: 20.3 x 20.3 x 2.5 cm Package Contents: 1 x Diamond Grinding Wheel Note: Color may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 cm.