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Inner Threaded Shank 4 flute Auger Drill Bits for Impact Wrench Features:

  • Four cutting spurs for faster drilling and brings cleaner holes
  • Solid quenching for less breakout, and extended drilling life.
  • Full screw-point tip allows bit to self-feed for ease of drilling.
  • Tapered four-flute design for faster chip ejection and less binding.
  • 4″ drill bits have shorter overall length for drilling in tight spaces. Ideal for holes up to 2″ deep.
  • Total length up to 24″ for hard to reach area.
  • Size: 10 – 36mm; 3/8″ – 1 3/8″