Description: 100% Brand New and High Quanlity 3mm shank diameter and compatible with other multi-tool machines. 6pcs Rotary File Set For Rotary Tools High hardness, super coarse teeth,for fit Processing wood, aluminum, plastic, etc. Purpose: stone carving, jade carving, grinding, polishing Specification: Material: HSS Color: Gold Total Length: Approx. 40mm/ 1.57inch Shank Diameter: Approx. 3mm/ 0.12inch Package Includes: 6Pieces HSS Rotary Bit Burr Note: The color may have different as the difference display, pls understand. Please allow 1-3mm error due to hand test