All products

Drill America 5 Piece Cobalt Drill Bit Set (1/4", 5/16", 3/8", 7/16", 1/2"), D/ACO Series, POUD/ACOJ

Toolhome.org participates in affiliate programs, including Amazon Associates. We may earn commissions from qualifying purchases, but our reviews remain honest and unbiased. Learn more ›

Drill America 5 Piece Cobalt Drill Bit Set (1/4", 5/16", 3/8", 7/16", 1/2"), D/ACO Series, POUD/ACOJ

Drill America 5 Piece Cobalt Drill Bit Set (1/4", 5/16", 3/8", 7/16", 1/2"), D/ACO Series, POUD/ACOJ

4.4

388 ratings

View on AMAZON

Highlights

  • Set of 5 jobber length cobalt drill bits includes sizes 1/4", 5/16", 3/8", 7/16" and 1/2" in a plastic pouch case
  • Effective on Tough Materials – Cobalt drills excel at drilling high-tensile strength materials like stainless steel, titanium, and Inconel.
  • 135° Split Point Tip – Provides fast penetration and accurate drilling with reduced walking.
  • High Red Hardness – Withstands heat and permits speeds up to 30% higher than conventional M2 high-speed steel.
  • Versatile Design – Features a round shank for compatibility with various tool-holding systems and a jobber-length profile for standard applications.

Pros/Cons

Pros

  • Cobalt construction

  • 135° split point tip

  • High heat resistance

  • Standard jobber length

Cons

  • Higher cost than HSS

  • Limited size range

Related

Tool Home is customer-supported. When you buy products through our site, we may earn an affiliate commission on featured products.

Tool Home

© 2025 Toolhome.org - All rights reserved.