Drill America DWDN TiN Coated Drill Bits
Drill America DWDN TiN Coated Drill Bits are high-speed steel which are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance.
The titanium nitride (TiN) coatings add a hard layer of gold-colored ceramic to the surface that extends tool life and permits faster cutting speeds than uncoated tools.