FEATURES: High production efficiency, good processing quality, finish, easy to use. Safe and reliable, reduce labor intensity, non-blocking. Suitable for wood carving, root carving, olive pits, sharp blade, durable. Used by Jewelers, Hobbyists, Craft Makers, Modelers. Suitable models: hanging mill, electric mill, drill, grind and the clamp rod diameter 3mm machine can be used. SPECIFICATIONS: Material: Tungsten Carbide Steel Head Diameter: 1/4” (6.4mm) Shaft Diameter: 1/8” (3mm) Shaft Length: 32.4-35mm Total length: 45-50mm Rotational Speed: 6000-50000 RPM Processing Hardness: HRA-85 Package includes: 10 x Tungsten Steel Rotary Burrs....