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Long Series Set - Black

Long Series Set - Black

by Bordo International
Save 52% Save 52%
$177.07
$177.07 - $177.07
$177.07
$84.99
$84.99 - $84.99
$84.99

 

  • 6 Piece Long Series Black Drill Set
  • ANSI B94-11
  • 118º chisel point with 30º helix.
  • Chisel point is suitable for general purpose drilling.
  • Black Finish Twist Drills (also called blue finish) achieve their distinctive colour by steam tempering, a thermal process resulting in a porous tool coating.
  • This surface helps to keep lubricant on the tool, particularly important on the cutting edges, thus reducing friction and cold welding. The result is increased tool life.
  • Black finish tools are generally recommended for ferrous applications where the oxide layer aids chip flow and heat dissipation.

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