General description Made of premium-milled Vanadium steel, these 10 Pcs Jewelry Setting Burrs are designed for precision and accuracy in lapidary making. They come in assorted sizes suitable for various applications. Technical specifications Shank size: 3/32 inch Sizes: 1.0mm, 1.2mm, 1.5mm, 1.8mm, 2.0mm, 2.3mm, 2.5mm, 3.0mm, 3.5mm, 4.0mm Material: Metal (Vanadium steel) Measurement allowed error: +/- 1-3cm Compatibility and accessories Fits electric drills, hanging mills, bench mills, electric grinders, rotary tools, etc. Usage Suitable for working with silver, jewelry, olive core, beads, bone, walnut, precious soft metals, and more. Other information Package Contents: 10 * 3/32 inch shank jewelry stone setting burr Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product.