... cutter, carbide rotary burrs, carbide rotary burs, carbide milling cutter, tungsten carbide rotary burrs, carbide burrs, hardmetal burrs, super hard tools ... can be upto HRC70.2. may replace small grinding wheel with shank at the most instances, and no dust pollution.3 ... quality, high fine finish, suitable for machining various mold cavity with high precision.4. long service life, the durability is ten ...