... 2000 Certificate OEM&ODM Service Carbide Carbide Rods for Drill BitsGRADE AND SPECIFICATION OF RODS GRADEISO CODECOBALT CONTENTDENSITYHARDNESSTRS ... , Corner Radius End Mill, Roughing End Mill, Drill Bits, Twist Drill, Center Drill, Spotting Drill, Saw Blade, Reamer, Side & Face Milling ... 4) Longer tool life, super high wear resistant and impact-resistant application.5) Work piece material: cast iron, ...