【SIZE】 Diameter : 8", Arbor Hole: 5/8", Thickness: 1", Grit: #600. 【High quality products】This CBN wheel is Superior CBN materials and processes. No matter how long it is used, it will not be deformed, so you do not need to adjust the fixture, and you do not need to trim the grinding wheel. 【Convenient and fast】Sharp completed in a few seconds. 【FUNCTION】 CBN grinding wheel is used for sharpening high-speed steel woodworking tools. 【VERSATILITY】 Perfect for sharpening and shaping a variety of woodturning tools and hard materials, including carbon steel, HSS, steel tools, and hardened steel. The wheel operates at a cooler temperature with minimal material removal, while its superior thermal conductivity prevents damage to the workpiece due to heat buildup, effectively extending the lifespan of your turning tools. CBN grinding wheels, with their high hardness and superior grinding performance, are not only widely used in processing hard and brittle materials, such as hard alloys, molds, ceramics, glass, gemstones, semiconductors, etc What grit size should I choose for CBN wheels? If you frequently modify tools or occasionally create your own, opt for the 80-grit wheel as your coarse option. If you're not often involved in heavy grinding, choose a 180-grit wheel for sharpening and a 320-grit for fine-tuning your tools. This setup will produce an extremely sharp edge while removing minimal metal, ensuring your tools have a prolonged lifespan.