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  • Qualtech 12 inch HSS Aircraft Extension Drill Bit
  • Qualtech 12 inch HSS Aircraft Extension Drill Bit
  • Qualtech 12 inch HSS Aircraft Extension Drill Bit
  • Qualtech 12 inch HSS Aircraft Extension Drill Bit

Qualtech 12 inch HSS Aircraft Extension Drill Bit

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  • Detail
    Manufactured to Aerospace Standard 907. The 135 degree split point is self-centering and reduces thrust. Ideal for drilling in mild steel where extra length for reach is required. They have a black oxide surface treatment that is abrasion resistant, reduces chip welding and improves chip flow. Sizes smaller than 1/16 and #52 have the 118 degree standard point.
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