20pcs HSS Rotary Burrs 3mm Rod, Carbide Burrs Compatible with Bits Rotary Tools for Carving Wood Engraving Metal Grinding Polishing Drilling Cutting Work

Rotary cutters Ideal for engraving, polishing, drilling, cutting or coring on wood, plastic, foam, aluminium, copper, iron and various alloys, with high precision work. Designed with HSS carbide, these rotary cutters resist wear, heat and impact for exceptional durability even during heavy use. 20 different shapes: Carbide cutters with various bits for all needs: spherical, cylindrical, conical, flame, oval, round nose, etc. Suitable for artistic, technical or industrial projects. 3mm shank bits compatible with mini rotary tools, electric or pneumatic drills for DIY enthusiasts, model makers or professionals. Tungsten cutters for metal Simple installation on rotary tool, work stable and clean. Add a little water or coolant to prevent overheating on sensitive materials.