10Pcs Tungsten Carbide Steel Rotary Burr Set Double Edge Rotary Tool Bits 1/8" Shank for DIY Wood Carving Metal Polishing Engraving Drilling

General description These tungsten carbide steel rotary burrs are designed for high efficiency in wood carving, metal polishing, engraving, and drilling. The set includes 10 pieces of double-edged solid carbide rotary bits, suitable for various materials including wood, iron, carbon steel, alloy steel, stainless steel, copper, aluminum, marble, jade, and bone. They are an excellent choice for DIY projects, crafts, hobbies, household repairs, jewelry making, lapidary work, and modeling. Technical specifications Total Length: 45-50mm Cutting Diameter: 1/4'' Shank Length: 35mm Shank Diameter: 1/8'' Chuck Size: 3mm (1/8 inch) Bit Size (Grinding Head): 6mm (1/4 inch) Machining Hardness: HRA ≥ 85, HRC70 Compatibility and accessories Compatible with most rotary tools and die grinders with a 1/8" chuck. Includes a wide selection of shapes for various cuts. Usage Ideal for drilling, engraving, grinding, polishing, and removing sharp edges. Efficient for stone and wood carving, as well as metalworking. Other information Packed in a plastic case for safe storage and protection. High working efficiency, processing efficiency is dozens of times higher than hand file tools and nearly ten times higher than small grinding wheels. Long service life, with heavy-duty rotary burrs lasting 10 times longer than high-speed steel and 200 times longer than grinding wheels. Designed for speeds of 6000-50000 RPM, reducing inefficient rolling and extending overall service life.