Description: Material:The Grinding Bit is made of durable diamond grit material, which is environmentally friendly and efficient, hard and does not break, has good shock and compression resistance, does not shed sand, does not fall off, is strong and wear resistant, and sharp for grinding.Use:Diamond Grinding Head is suitable for grinding various cast iron, stainless steel, carbide, ceramics, angle iron, stone and other materials. Note: Not recommended for materials with lower hardness.Widely Applicable:The Diamond Grinding Burr Drill Bit,which is easy to use. Suitable for hand electric drills and grinding machines. After use, you need to disconnect the power of the machine and then disassemble the grinding head.Multi Function:Grinding Bit For Metal is for DIY crafts, hobbies, home repairs, engraving and polishing, jewelry making, and more.Product Dimensions:The total length of the grinding head is 60mm which makes it suitable for detailed work. Specification: Note: During engraving operation, be sure to add water to cool the grinding head to prevent it from burning due to high temperature and being scrapped. Do not use the impact function. Size Chart: Total length 6cm or 2.36inch Grinding head 0.8cm or 0.31inch Package Includes: 3 Grinding Wheels Bit Note: Please allow slightly errors due to manual measurement and different monitors.