10 Best Cobalt Drill Bits 2021

Gareth Otwell Reviewed by Gareth Otwell | Last Updated:

DEWALT Cobalt Drill Bit Set with Pilot Point – ⭐ Best Overall Cobalt Drill Bit

DWA1240 by DEWALT

  • Weight: 0.8 pounds
  • Dimensions: 8.8 x 1.7 x 8.8 inches
DEWALT Cobalt Drill Bit Set with Pilot Point
  • Connectable accessory storage system to optimize storage space of drill bits for wood, metal or i-beams
  • Patented bit-bar design allows easy removal of drill bits and customizable placement
  • DEWALT drill bit set comes with clear lid allowing you to easily see contents at glance
  • Clip latch for secure closing
  • Small Bulk Storage size fits inside the Small and Medium ToughCase+ (sold separately) - Ideal for organizing loose bits
  • Maximum speed and life in stainless steel and other hard metals
  • PILOT POINT tip starts on contact for clean, accurate holes and reduces lock-up on breakthrough
  • Industrial strength cobalt for optimum life and durability in metal
  • No bit walking - more user control

COMOWARE Cobalt Drill Bit Set- 15Pcs M35 High Speed Steel

by COMOWARE

COMOWARE Cobalt Drill Bit Set- 15Pcs M35 High Speed Steel
  • HIGH QUALITY MATERIAL: 5% Cobalt High Speed Steel M35 provide extended tool life compared to ordinary drill bits. Durable and strong
  • TWIST DESIGN & PERFORMANCE: PRECISE 135°SPLIT POINT, gold oxide finish and round straight shanks. Prevent walking, clear chips and particles faster.Produced by precision fully ground which ensures chips move smoothly.
  • PROFESSIONAL & WIDELY USE: M35 Cobalt HSS is more suitable for hardened material. Particularly successful in cutting through hard metals such as stainless steel, cast iron, high temperature alloy, titanium alloy, hard plastics and woods, and also can be used for softer materials.
  • SIZE INCLUDED: 15pcs jobber length drill bit set with plastic storage case including sizes:1/16" 2pc,5/64" 1pc ,3/32" 2pc,7/64" 1pc,1/8" 2pc ,9/64" 1pc, 5/32" 1pc, 3/16" 1pc, 7/32" 1pc, 1/4" 1pc, 5/16" 1pc, 3/8" 1pc.
  • 100% SATISFACTION GUARANTEE: If you are not 100% satisfied with your purchase for any reason whatsoever simply please feel free to contact us.

IRWIN Drill Bit Set

3018002 by Irwin Tools

  • Weight: 4.5 pounds
  • Dimensions: 12 x 7.5 x 4 inches
IRWIN Drill Bit Set
  • 29 Piece
  • Cobalt Drill Bit Set
  • Sizes 1/16 inch -1/2 inch in 1/64 inch increments, 135 Degree Split Point To Minimize Walk
  • 5% Cobalt For Higher Heat & Abrasion Resistance
  • Heavy Duty Web Construction For Strength & Durability

Drill America

DWD29J-CO-PC by Drill America

  • Weight: 2.2 pounds
Drill America
  • Set of 29 jobber length drill bits includes inch sizes 1/16" to 1/2" in 1/64" increments
  • Cobalt steel provides extended tool life compared to high-speed steel drill bits when drilling hard materials
  • Gold oxide finish lubricates the drill bit and provides wear resistance
  • Self-centering 135-degree split point penetrates hard material without a pilot hole and produces small chips to reduce clogging
  • Meets ANSI specifications

Bosch CO21B 21 Pc. Cobalt M42 Drill Bit Set

CO21B by Bosch

  • Warranty: Product Defects Only
Bosch CO21B 21 Pc. Cobalt M42 Drill Bit Set
  • Cobalt M42 drill bit – provides upgraded M42 Cobalt jobber-length bits designed for durability, high heat resistance and Hardened surface for stainless steel, cast iron, titanium, light-gauge metal and aluminum
  • Enhanced M42 alloy material – contains 8% Cobalt alloy that delivers 10x life vs. Standard bits
  • High-heat resistant bits – withstand high-temperature applications for extended periods of time
  • Thick web-helix design – provides additional stability in tough applications.Case Type:Plastic
  • Surface-hardened tip – penetrates tough abrasive materials

Bosch CO2135 1/8 In. x 2-3/4 In. Cobalt Drill Bit – 💲 Best Budget Cobalt Drill Bit

CO2135 by Bosch

  • Color: Metallic
  • Weight: 0.02 pounds
  • Dimensions: 0.2 x 1.8 x 5.8 inches
Bosch CO2135 1/8 In. x 2-3/4 In. Cobalt Drill Bit
  • Withstands high-temperature applications for extended periods of time (up to 1,100 degreeF)
  • Rigid, thick web design adds stability to bit in tough applications
  • Surface hardened to penetrate tough abrasive materials
  • Available in jobber length, full shank
  • Best used for drilling into light-gauge metal, high-carbon steel, aluminum and ally steel, cast iron, stainless steel and titanium

Bosch CO2143 1/4 In. x 4 In. Cobalt Drill Bit

CO2143 by Bosch

  • Color: Metallic
  • Dimensions: 0 x 0 x 0 inches
Bosch CO2143 1/4 In. x 4 In. Cobalt Drill Bit
  • Withstands high-temperature applications for extended periods of time (up to 1,100 degreeF)
  • Rigid, thick web design adds stability to bit in tough applications
  • Surface hardened to penetrate tough abrasive materials, Cuts through light gauge metal, high carbon steel, aluminum and alloy steel, cast iron and stainless steel
  • Available in jobber length, full shank, Drill Point Angle is 135 degrees, Surface Coating is uncoated (bright finish), Bit type is Twist
  • Best used for drilling into light-gauge metal, high-carbon steel, aluminum and ally steel, cast iron, stainless steel and titanium

CO-Z 5pcs Hss Cobalt Multiple Hole 50 Sizes Step Drill

CO-Z SDB-0000 by CO-Z

  • Color: Dark Bronze
  • Dimensions: 4.3 x 1.6 x 6.1 inches
CO-Z 5pcs Hss Cobalt Multiple Hole 50 Sizes Step Drill
  • Cobalt high speed steel along with the titanium coating ensures extreme durability, will stay new and shiny for years to come.
  • Different sized shanks ensure compatibility with 1/4, 3/8 and 1/2 in. chuck sizes.
  • Non-walking drill tip provides fast and smooth drills on steel sheets, aluminum sheets, wood board, plastic board etc. (the board must be smaller in thickness than the height of step drill bits).
  • Please mark the spot that you are to drill for easier drilling and improved drill bits life.
  • All the bits come in a well-organized case for easy transport and storage.

21 Pc Cobalt M42 Drill Bit Set 1/16" to 1/2"

21M42GB by Drill Hog

  • Weight: 1 pounds
21 Pc Cobalt M42 Drill Bit Set 1/16" to 1/2"
  • Solid Cobalt M42 Steel
  • 135 Degree Split Point Prevents "walking"
  • Tri Flat Shank - 3 Flat Sides on Shank Prevents "Spin" in the Chuck
  • 1/16 to 1/2" by 1/32nds Includes Steel Case with Pop Up Tiers
  • Lifetime Warranty

Drill America 29 Piece m42 Cobalt Drill Bit Set (1/16" – 👑 Premium Pick

D/A29J-CO-SET by Drill America

  • Weight: 3.26 pounds
Drill America 29 Piece m42 Cobalt Drill Bit Set (1/16"
  • Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys
  • Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools
  • Round shanks allow use with a wide variety of toolholding systems
  • When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
  • 29 piece drill bit set comes in a metal case

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