Versatile Designs: Diamond bits come in a variety of shapes.Different shapes, more choices for complex tasks such as engraving and polishing. Multifuncyional: This kit can be used to engrave, polish, grind, drill and cut a variety of materials including tile, ceramic, glass, jade, marble, granite and other hard materials. APPLICABLE SIZE: Equipped with 1/8inchs (2.35mm/3 mm) universal shank that is compatible with Dremel and most rotary tools. Various shapes of bits meet different requirements, improve work efficiency. 60-GRIT DIAMOND GRINDING BITS: Bit head surface is completely coated with fine diamond particles, with high grinding efficiency, high durability and stable quality, and safer to use. More Choices, More Uses:Our stone grinding tool includes 13 different grinding bits, each with two of the same grit size and form. The various shapes, including spheres, cones, cylinders, and more, meet all your requirements. Ideal for home repair (wood, plastic and dog’s nails), crafts, DIY engraving hobbies, and more. Product Description: Upgrade your workshop with our Premium Diamond Grinding Bits Set - the ultimate solution for precision grinding, engraving and polishing! This 30-piece professional kit features industrial-grade diamond coated bits that outperform standard grinding tools with 10X longer lifespan. Key Features: ✔ Universal Compatibility - Perfectly fits Dremel tools, rotary tools and drills (3mm/6mm shank) with no adapters required ✔ Multi-Material Performance - Specially designed for glass engraving, metal grinding, ceramic polishing and stone carving ✔ Professional-Grade Quality - CNC-approved diamond coating ensures precise, clean cuts every time ✔ Complete 30-Piece Set - Includes diamond burr bits, cutting wheels and polishing heads for all your projects ✔ Versatile Applications - Ideal for jewelry making, stained glass work, circuit board repair and DIY crafts Our diamond coated grinding bits set delivers: ✓ Smoother finishes than standard carbide bits ✓ Longer lasting performance for cost savings ✓ Precision control for detailed work ✓ Professional results every time