Suitable Size: 8 inches in diameter, 1 inch wide, bore 5/8 inches, 600 grit. Stainless steel body provides smooth performance, resists rust, and offers high hardness, high compressive strength, excellent 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 to traditional diamond grinding wheels, CBN grinding wheels generate less heat and are better suited for hard alloys, high alumina porcelain, optical glass, gemstones, semiconductor materials, and stone materials. More Professional: Ideal for precise grinding on common grinders. Recommended operating speed: 1000 RPM to 3600 RPM. CBN abrasive offers high compressive strength, low heat generation, excellent shape retention, and extended service life. Perfect Compatibility: Precision manufactured for accurate fit, eliminating the need for truing or dressing. These wheels enhance the performance of entry-level grinders, delivering results comparable to industrial models. The aluminum arbor reducing bushing provides superior smoothness compared to plastic versions. CBN grinding wheels are suitable 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: Only the items listed are included. Light reflection and display differences may cause slight variations in color between the image and actual item. Measurement error allowance: +/- 1-3 cm.