General description These tungsten carbide steel rotary burrs are designed for high efficiency and durability. Made from premium materials, they are sharp and sturdy, making them ideal for various applications including wood carving, metal polishing, engraving, and drilling. Technical specifications Total length: 45-50mm Cutting diameter: 1/4'' Shank length: 35mm Shank diameter: 1/8'' Compatible with rotary tools and die grinders Speed range: 6000-50000 RPM Usage These rotary burrs can be used on a variety of materials including: Wood Iron Carbon steel Alloy steel Stainless steel Copper Aluminum Marble Jade Bone Other information Double cut design for efficient grinding and carving Long service life: 10 times longer than high-speed steel and 200 times longer than grinding wheels Packed in a plastic case for safe storage and protection Great for DIY, crafts, hobbies, household repairs, jewelry, lapidary use, modeling, and more