Suitable Size: 6 inches in diameter, 1 inch wide, Bore 1/2 inches, 180 grit.-stainless steel body, more smoothly, does not rust, high hardness, high compressive strength, good wear resistance and long service life High performance: Electroplated diamond flat grinding wheels are mainly used for grinding and cylindrical grinding of hard alloy measuring tools, tungsten steel, high-speed steel, alloy steel, glass, gemstones, jade, jadeite, amber honey wax raw stones, magnetic materials, ceramics, molds, etc New upgrade: Compared with the traditional diamond grinding wheel, the CBN grinding wheel generates less heat, and is more suitable for hard alloy, high alumina porcelain, optical glass, agate gem, semiconductor materials, stone materials, etc More professional: Use this wheel for the most precise grinding even on the most common grinders. 1000 RPM to 3600 RPM is recommended. As a high-performance abrasive, CBN has high compressive strength, generates less heat and good abrasive shape retention long service life 4-in-1 Design: This Grinding Wheel has the addition of a 1/4" radius on both edges for sharpening hollowing tool bits and scrapers,woodworking chisel,various steel knives,wood gouge. CBN grinding wheel is the most suitable grinding wheel for grinding high-speed steel products EASGIU CBN 4 in 1 Grinding Wheel, 6 Inch Dia x 1 Inch Wide x 1/2 Inch Bore for Sharpening Woodturning Tools, High Speed Steel Tools, Bench Grinders