The IRWIN 621 Heavy Duty Extended Length Aircraft Drill Bit is a versatile tool designed for drilling in hard-to-reach areas and running wires and cables. Constructed from M-2 high speed steel, this drill bit offers a perfect balance of strength, heat resistance, and wear resistance. With a black oxide coating that resists corrosion, it is suitable for general use in wood, metal, and plastic materials. The 135-degree split point ensures a precise start and eliminates bit walking, making it a reliable choice for various drilling tasks.




