Precision Crafting Tool: Designed for jewelry makers and hobbyists, this set of 12 90 degree Hart burrs is perfect for detail engraving and carving. The precision milled Vanadium steel ensures durability and accuracy in every use. Versatile Shank Size: Each burr in this comprehensive set boasts a 3/32 inch (2.35 mm) shank, making them compatible with most rotary tools, drills, and grinders. perfect for both professional jewelers and DIY enthusiasts. Complete Burr Size Range: The set includes a wide range of burr sizes from 007 to 023, enabling intricate work on various materials. Whether crafting fine jewelry or working on a lapidary project, these burrs meet diverse needs. Construction: Made from premium milled Vanadium steel, the burrs resist wear and maintain sharpness over prolonged use. This quality construction ensures long-lasting reliability and consistent performance. Portable Storage Solution: Delivered in a robust plastic storage box, this set of 12 burrs is neatly organized and easily portable. The casing not only protects the burrs but also provides a convenient storage option, keeping your workspace tidy. Please note:the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:Silver Material:steel Size:0.7/0.8/1.0/1.1/1.2/1.4/1.5/1.6/1.8/2.0/2.1/2.3mm Package Contents: 12 * 90 Degree Heart Burs Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.