Industrial-Grade Cobalt Drill Bits

$11.99 $22.99 Save 48%

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This Industrial-Grade Cobalt Drill Bits is constructed of industrial high speed steel with titanium nitride coating for durability and strength to punch and drill clean holes in materials like plastic, aluminum, wood, copper, stainless steel and other types of sheet metal!


  • Engraved sizes. Easily identify which size you need with the contrasted, laser engraved sizes inside the step drill bit flute.

  • Universal design. The t1/4" hex shank is a great universal fit that will give you confidence while you work knowing that your drill bit is securely in place.

  • Increased cutting speed. Self-centering feature prevents walking and 135 degrees split point increases cutting speed. Drill holes on metal like a hot knife on butter.
  • Multiple uses. Classic high speed steel with titanium coating for proven capability and durability in drilling holes in plastic, aluminum, copper, stainless steel and many other types of sheet metal.


  • Material: HSS steel.
  • The lengths are separately 104.5mm (15 step), 74mm (9 step), and 67mm (5 steps).
  • The 3 cutters come in the following sizes:
  • 4 - 32mm ( 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm ).
  • 4 - 20mm ( 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm ).
  • 4 - 12mm ( 4mm, 6mm, 8mm, 10mm, 12mm ).


  • 1 x 4-32mm Industrial-Grade Cobalt Drill Bits /
  • 1 x 4-20mm Industrial-Grade Cobalt Drill Bits /
  • 1 x 4-12mm Industrial-Grade Cobalt Drill Bits /
  • Set of 3 ( 4-32mm, 4-20mm, 4-12mm)
Return & Warranty
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  • If you're not 100% satisfied, let us know and we'll make it right.
Shipping Policies
  • Orders ship within 5 to 10 business days.
  • Tip: Buying 2 products or more at the same time will save you quite a lot on shipping fees.