... carbide burrs, hardmetal burrs, super hard tools, carbide tools, tungsten steel grinder, solid carbide end mills, carbide milling, carbide end mills ... process a wide variety of metals(include all kinds of hardened steel) and nonferrous metals( such as marble, gemstone, bone, etc), ... life, the durability is ten times stronger than high speed steel cutter, and more 200 times than small grinding wheel.5 ...