... /TiN coated, black finished Good quality and best price OEM, send drawings for special cutters Drill bits, twit drills, center drills 1 ... End Mill, Corner Radius End Mill, Roughing End Mill, Drill Bits, Twist Drill, Center Drill, Spotting Drill, Saw Blade, Reamer, ... anti-sticky).4) Longer tool life, super high wear resistant and impact-resistant application.5) Work piece material: cast iron, carbon ...