... carbide rotary burrs, carbide burrs, hardmetal burrs, super hard tools, carbide tools, tungsten steel grinder, solid carbide end mills, carbide milling ... high speed steel cutter, and more 200 times than small grinding wheel.5. easy and simple for handling and operating, safe ... burrs is generally drived by handled electric and pneumatic tools( or machine tools). The normal speed of rotation is 6,000 ...