Each burr comes with a 3/32 inch (2.35 mm) shank, specifically designed to suit most rotary tools, drills, grinders, and hanging mills. The optimal shank size provides exceptional stability, ensuring and accuracy in every project. Our comprehensive Jewelry 90 degree hart-burs set features 6 versatile sizes including 0.8/1.0/1.4/1.8/2.0/2.3mm. This variety of sizes caters to different uses and materials, letting you do work effortlessly, and produce smooth finishes on your art pieces. Constructed from premium quality Steel providing superior hardness and durability. Universal in application, these burrs are perfect for carving a wide spectrum of materials like silver, wood, olives cores, and beads. Additionally, they are gentle enough to work on precious soft metal without causing any damage, making them a must-have tool for artisans and hobbyists alike. The package contains 6 pieces of 3/32inch shank jewelry making 90º hart burs. Each of these burrs is optimally made to help you achieve the best result in your jewelry making, wood or metal crafts., Manufacturer: Elantoexis