Drill America 1-3/8" High Speed Steel 3MT Taper Shank Drill Bit, DWDTS Series

1-3/8" HSS 3MT Drill Bit Undersized Shank.

• 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
• Morse taper shank allows the tool to be inserted directly into the machine's spindle to facilitate high-torque applications such as large cut diameters
• When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
• Designed to perform in a broad range of materials in the iron and steel families