Carbide Burr blanks
Brazed in steel body
As carbide burrs, carbide rotary files
Tungsten carbide rotary burrs
 have a wide range of applications when machining mild steel, carbon steel, cast iron, stainless steel and aluminum etc. They remove material many times faster than traditional hand files allowing for increased productivity. They are for use in electric or air powered die grinders and some routers (where the router can be removed from the base).