Suitable Size: 8 inches in diameter, 1 inch wide, bore 5/8 inches, 600 grit. Stainless steel body, smooth surface, does not rust, 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, magnetic materials, ceramics, molds, and similar materials. New Upgrade: Compared with traditional diamond grinding wheels, CBN grinding wheels generate less heat and are more suitable for hard alloys, high alumina porcelain, optical glass, semiconductors, stone, and other demanding applications. More Professional: Use this wheel for precise grinding on common grinders. Recommended operating speed: 1000 RPM to 3600 RPM. As a high-performance abrasive, CBN offers high compressive strength, low heat generation, excellent shape retention, and extended service life. Perfect Compatibility: Precision manufactured for exact fit, eliminating the need for truing or dressing. These wheels enhance the performance of budget-friendly grinders, delivering industrial-level results. The aluminum arbor reducing bushing provides superior smoothness compared to plastic versions. CBN grinding wheels are ideal for high-speed steel product grinding. Type: 600 Grit Color: Silver Material: Steel Size: 20.3 x 20.3 x 2.5 cm Package Contents: 1 x Diamond Wheel Note: Light reflection and display differences may cause slight color variation between the image and actual item. Measurement may vary by +/- 1-3 cm.