General description These 10PCS 3mmx6mm Carbide Rotary Cutting Burrs are designed for wood engraving and drilling tasks. Made from tungsten carbide, they feature a double-cut design that enhances their effectiveness on softer materials such as wood, plastic, and aluminum. These burrs are ideal for polishing metals and soft plastics, making them suitable for jewelers, hobbyists, and DIY enthusiasts. Technical specifications Total length: 45-50 mm Cutting diameter: 1/4" (6 mm) Shank length: 35 mm Shank diameter: 1/8" (3 mm) Material: Tungsten carbide Tooth thickness: double cut Hardness treatment: HRA ≥ 85 Usage Woodworking Metal polishing Plastic engraving Craft modeling Home repairs