tungsten carbide burrs is also called tungsten carbide rotary files. Its main function is to gind hard material. Quality is well controlled within us. since we also produce sintered blanks of tungsten carbide burrs. pure tungsten carbide plate or rod is used as sputtering target for coatings. we also make carbide nozzles for PDC drill bit and rock drill bits. carbide rods is produced using the advanced extrusion equipment. it is a very popular base material for carbide rotary tools like end mills.