Carbide Rods for Drill Bits HIP sintered&Extrusion method 100% virgin raw material ISO9001:2000 ... End Mill, Corner Radius End Mill, Roughing End Mill, Drill Bits, Twist Drill, Center Drill, Spotting Drill, Saw Blade, Reamer, Side ... : cast iron, carbon steel, alloy steel, hardened steel, quenched steel, non-ferrous metals, etc.6) Good for machining up to HRC70 ...