... quality. 1. Feautres and methods of application Carbide rotary file is also called carbide high speed cutter, ... rotary burrs, carbide rotary burs, carbide milling cutter, tungsten carbide rotary burrs, carbide burrs, hardmetal burrs, super hard tools, carbide tools, tungsten steel grinder ... about 10 times for comprehesive machining cost. Carbide rotary burrs is generally drived by handled electric and ...