Precision Cone Shape Design – Tapered cone burr with 4-25mm head diameter range allows precise carving and grinding in tight contours, corners, and detailed stone work Dual Shank Size Options – Available with 3mm (1/8") and 6mm shank diameters, compatible with most rotary tools, die grinders, engraving machines, and electric grinders Electroplated Diamond Coating – High-quality synthetic diamond grit electroplated onto durable steel shank provides high hardness, excellent wear resistance, and long service life Multi-Purpose Carving & Polishing – Ideal for jade carving, stone engraving, gemstone polishing, glass etching, ceramic detailing, and removing burrs from various materials Reliable Heat Management – For extended tool life and optimal performance, pause periodically during extended use to allow cooling; compatible with water cooling for heat-sensitive materials, Manufacturer: shuojiaheng