Metal Drill Bits

Cobalt Drill Bit Sets

For rotary drills/drivers

  • Long Lifetime when Drilling Stainless Steel
  • Manufactured from cobalt – for drilling in hard and abrasive materials
  • No-skate tip – for clean and accurate starts
  • Three-flat shank – promotes better grip on bits 3/16 In. and larger
  • Designed for very high drilling temperatures – for superior performance in stainless steel
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Choose a pack size 2 options

Cobalt Drill Bit Sets
For rotary drills/drivers

Fits tools of most brands


Cylindrical shank compatible with three-jaw drill chucks.


The Cobalt Drill Bit provides long-lasting performance when drilling stainless steel. This extended lifetime results from a cobalt alloy content of 5% and fully ground HSS (high-speed steel), which provides excellent surface quality, wear resistance and heat protection. Equipped with two cutters and two flutes, chips are removed quickly to make the bit last even longer. This drill bit works with alloyed and non-alloyed steel, stainless steel, cast iron, cast steel and acid- and heat-resistant steels.

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Product Options

Available product options: 4

Model number Pack quantity
CO14 14
CO21B 21
CO14B 14
CO21 21

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