Specifications:
Cutting Diameter: 16.5mm / 0.65"
Reduced Shank Diameter: 1/2"
Cutting Edge Length: 55mm / 2.17"
Overall Length: 145mm / 6"
Split Point Angle: 118 Degree
Material: High Speed Steel 9341
Finish: Black Oxide
Hardened to: HRC62-65
Package Content: 2pcs x Reduced Shank Drill Bits

Descriptions:High-speed steel tools combine hardness and toughness for wear resistance and durability. It can maintain the sharpness even at high temperatures. Black oxide coating increases durability, corrosion resistance and lubricity, and helps to reduce friction and heat, extending the tool life.
The reduced shank drill bit expands the size range capacity of drill chucks. Allows you to efficiently drill larger diameter holes without exceeding the capacity of the chuck.
Can drill clean and accurate holes in A3 steel, 45# carbon steel, cast iron, aluminum alloy, brass, wood and plastic, good for a variety of applications. The cutting edges provide neat and smooth cuts. Large spiral grooves facilitate the export of metal chips, saving time and effort in drilling operation.
Suitable for handheld drills, drilling machines, bench drills, machining centers, CNC lathes. Use an appropriate lubricant (such as cutting fluid or oil) to reduce friction and heat build-up, especially important when drilling metal.
Notices:
Make sure the drill bit is tightened securely into the chuck. Use a marker or hole punch to mark the exact location, this will help guide your drilling accuracy.
Start the drill at a slow speed and gradually increase to the desired drilling speed. Apply steady pressure to the drill, but avoid excessive force. Keep the drill perpendicular to the work surface to ensure straight and accurate holes.