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BORDO Panel Drills HSS Black Double Ended

  • 135° Split Point (crankshaft point)
  • Split point is self centering reducing the need for end thrust.
  • The 135° point provides superior performance when drilling harder steel materials.
  • In most situations it will produce thicker chips minimising work hardening of the cavity.
  • Faster penetration reduces abrasion and friction along the cutting edges.
  • Black Finish 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.

In Stock
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Additional information

Size

No.30, No.20, No.11

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