Product details:

Drill America DWT Combined Drill and Tap is designed to drill and Tap in one operation. Can be used on multi-spindle or hand held operations. Drill America DWT Combined Drill and Tap is made of high-speed steel. High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance. Black oxide treatment adds lubricity and creates small pockets on the surface of the tool that act to hold coolant near the cutting edge.