Set Cobalt Drill Bits of 2025

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Last Updated - April 22, 2025

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Clicked 7 times in the last month

Drill America
Drill America - D/A29J-CO-PC 29 Piece M42 Cobalt Drill Bit Set in Round Case (1/16" - 1/2" X 64ths), D/ACO Series

8.2 worth the money

8.0 lasts a long time

8.0 Long life

Why we love it

Cobalt steel gives the drill bits extended life

The round shank allows for use with various tool holding systems

The gold oxide finish provides wear resistance and acts as a lubricant
Main highlights

When all hands are on deck, hang the drill index on your belt whether you're in the shop or field
Unique round drill index combines form and function into 1 beautifully designed, easy to carry drill set
Set contains 29 m42 Cobalt Drill Bits sizes 1/16" - 1/2" x 1/64" increments
Round shanks allow use with a wide variety of tool holding systems
Manufactured to Aerospace Standard 907 and display high red hardness, permitting speeds up to 30% greater than with conventional M2 high speed steel
Gold oxide finish acts as a lubricant and provides wear resistance
Effortlessly grip the set in 1 hand as you would a travel coffee mug or leave it in the cup holder of your truck while on the way to a job
Cobalt steel provides extended tool life compared to high-speed steel drill bits, and maintains the tool's toughness and hardness in high drilling temperatures
Cobalt Drills are effective in drilling tough, high tensile strength materials like stainless steel, Inconel, and titanium
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9.9

Exceptional

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Value for Money

2

IRWIN
IRWIN Drill Bit Set, M35 Cobalt Alloy Steel Steel, 29-Piece (3018002)

9.3 Long life

9.1 worth the money

9.1 lasts a long time

Why we love it

High heat and abrasion resistance.

Ideal for DIY and professional use.

Reliable for hard metal drilling.
Main highlights

Cobalt Alloy Durability
Made from 5% cobalt alloy steel for high heat and abrasion resistance.

Versatile Use Cases
Perfect for drilling through hard materials like steel and alloy.

Customer Praise for Strength
Highly praised for not breaking under pressure and ease of use.
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9.8

Exceptional

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3

DEWALT
DEWALT Cobalt Alloy Steel Drill Bit Set with Pilot Point, 14-Piece (DWA1240)

45% Off

9.5 Simple to use

9.3 materials Quality

9.3 Sheerness

Why we love it

Easy to store and organize.

Perfect for tough metal projects.

Durable with long-lasting sharpness.
Main highlights

Efficient Storage Design
Connectable storage system optimizes space, with a clear lid for easy visibility.

Ideal for Metal Drilling
Perfect for drilling in metal, wood, and I-beams with precision.

Durability in Cobalt Bits
Cobalt bits praised for staying sharp and effective with proper care.
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9.6

Exceptional

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4

BOSCH
BOSCH CO14B 14-Piece Assorted Set with Included Case - Cobalt M42 Metal Drill Bits with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, and Light-Gauge Metal

8.9 Sheerness

8.7 worth the money

8.4 lasts a long time

Why we love it

Highly durable and long-lasting.

Efficient on tough materials.

Clean drilling with minimal effort.
Main highlights

Durable and Heat-Resistant Design
Cobalt M42 drill bit for durability and high heat resistance.

Ideal for Tough Metal Drilling
Perfect for stainless steel, cast iron, titanium, and light-gauge metal.

Exceptional Customer Praise for Durability
Consistently praised for lasting performance and clean cuts.
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9.3

Excellent

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5

Milwaukee
Milwaukee Electric Tools 48-89-2332 29Pc Cobalt Helix Drill Bit Set, Red

9.9 Long life

9.9 lasts a long time

9.9 worth the money
Main highlights

This product meets customer requirement
These brad point drill bits are excellent for both home repair and woodworking use
Product is easy to use
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9.2

Excellent

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6

Sinyeenglon
Sinyeenglon Cobalt Drill Bit Set for Hardened Metal and Stainless Steel, 99Pcs M35 High Speed Steel Twist Jobber Metal Drill Bits 1/16"-3/8", with Plastic Index Storage Case

Why we love it

Exceptional durability and cutting efficiency.

Perfect for various hard metal materials.

Conveniently organized storage case.
Main highlights

Durable and Efficient
Cobalt M35 material offers superior hardness, cutting speed, and longevity, lasting up to 12 times longer than average HSS bits.

Versatile Applications
Ideal for drilling stainless steel, cast iron, titanium, aluminum, and other hard metals.

Organized Storage
Plastic case with labeled compartments for easy access and organization.
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9.1

Excellent

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7

CaRoller
CaRoller 29Pcs Cobalt Drill Bit Set, 135 Degree Tip High Speed Steel with Black and Gold Finish, Stainless Steel, Plastic and Wood with Metal Indexed Storage Case 1/16"-1/2"

9.5 worth the money

9.3 lasts a long time

9.1 materials Quality

Why we love it

Wide range of sizes for every drilling need.

Durable materials ensure long-lasting performance.

Versatile for various materials like wood and metal.
Main highlights

Comprehensive Bit Set
This 29-piece bit set offers a wide range of sizes from 1/16 to 1/2 inches, ensuring versatility for various drilling tasks.

Professional and DIY Use
Ideal for both professionals and DIY enthusiasts, this set provides superior durability and performance across multiple materials like wood, metal, and plastic.

High Durability and Sharpness
Customers consistently praise the bits for their sharpness and ability to cut through various materials efficiently, maintaining their edge over extended use.
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9.0

Excellent

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8

Drill America
Drill America - DWD29J-CO-PC 29 Piece M35 Cobalt Drill Bit Set in Round Case (1/16" - 1/2" X 64ths), DWDCO Series

8.2 lasts a long time

8.2 worth the money

8.0 Durability

Why we love it

Durable cobalt steel for extended use.

Excellent for hard material drilling.

Highly praised for smooth performance.
Main highlights

Extended Tool Life with Cobalt Steel
Cobalt steel construction ensures durability and longevity when drilling hard materials.

Ideal for Drilling Hard Materials
Perfect for drilling through hardened steel with ease and precision.

Effortless Steel Drilling Performance
Customers praise the bits for cutting through steel like butter.
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8.9

Very Good

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9

toolant
toolant Cobalt Drill Bit Set for Metal and Steel (Pro), Titanium Aluminum Nitride Coated (TiAlN) with Bullet Point Tip, for Hardened Metal, Stainless Steel, 21pcs 1/16"-1/2"

Why we love it

Durable and heat-resistant for metal drilling.

Self-centering tips for precise drilling.

Excellent customer service and support.
Main highlights

Exceptional Performance for Metal Drilling
The TOOLANT Pro Cobalt Drill Bit Set features titanium aluminum nitride coating, enhancing durability and heat resistance for efficient metal drilling.

Ideal for Heavy-Duty Scenarios
Meticulously engineered with bullet point tips, this set excels in demanding tasks, ensuring precise and accurate drilling in metal.

Praised Longevity and Customer Support
Customers appreciate the drill bits' longevity and the company's excellent customer service, even offering refunds or replacements if needed.
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8.8

Very Good

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10

ROGAPER
ROGAPER 145Pcs Cobalt Drill Bits Set, M35 HSS, 135 Degree Tip, Twist Jobber Length Drill Bit Kit for Hardened Metal, Cast Iron, Stainless Steel, Plastic and Wood with Storage Case, 1/16"-1/2"
Main highlights

Professional After-Sales Service: The outer box for the stepped drill bit is sturdy and easier to carry and store. If you are not fully satisfied with our product for any reason, please contact us for a 100% refund or replacement.
Perfect Drill Bits: Precision grinding process for a clean surface and high grinding accuracy. Universal round drill shank, widely applicable to tool holding systems and tightly clamped
Enhanced M35 Alloy Material: These drill bits contain 5% Cobalt alloy steel, which increases wear resistance and durability. Industry grade M35 high-speed steel drill bit set, harder than 4241 HSS used in other similar drill bits set
145 Pieces Set Includes: 29pcs Fractional Size: 1/16 to 1/2 inch bits in 1/64th increments; 26pcs Letter Size: A To Z; 60pcs Numbered Size: #1 To #60; Set includes the drill bit holder with size index for easy storage and organizing
135° Split Point & Twist Design: The 135-degree fast cutting point is automatically centered and penetrates quickly with less pressure, reducing walking, fully ground drill bit with a sharp and durable cutting edge. Twist design for clear chips faster
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8.7

Very Good

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Set Cobalt Drill Bits of 2025

1

Drill America - D/A29J-CO-PC 29 Piece M42 Cobalt Drill Bit Set in Round Case (1/16" - 1/2" X 64ths), D/ACO Series

Why we love it

2

IRWIN Drill Bit Set, M35 Cobalt Alloy Steel Steel, 29-Piece (3018002)

Why we love it

3

DEWALT Cobalt Alloy Steel Drill Bit Set with Pilot Point, 14-Piece (DWA1240)

Why we love it

4

BOSCH CO14B 14-Piece Assorted Set with Included Case - Cobalt M42 Metal Drill Bits with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, and Light-Gauge Metal

Why we love it

5

Milwaukee Electric Tools 48-89-2332 29Pc Cobalt Helix Drill Bit Set, Red

6

Sinyeenglon Cobalt Drill Bit Set for Hardened Metal and Stainless Steel, 99Pcs M35 High Speed Steel Twist Jobber Metal Drill Bits 1/16"-3/8", with Plastic Index Storage Case

Why we love it

7

CaRoller 29Pcs Cobalt Drill Bit Set, 135 Degree Tip High Speed Steel with Black and Gold Finish, Stainless Steel, Plastic and Wood with Metal Indexed Storage Case 1/16"-1/2"

Why we love it

8

Drill America - DWD29J-CO-PC 29 Piece M35 Cobalt Drill Bit Set in Round Case (1/16" - 1/2" X 64ths), DWDCO Series

Why we love it

9

toolant Cobalt Drill Bit Set for Metal and Steel (Pro), Titanium Aluminum Nitride Coated (TiAlN) with Bullet Point Tip, for Hardened Metal, Stainless Steel, 21pcs 1/16"-1/2"

Why we love it

10

ROGAPER 145Pcs Cobalt Drill Bits Set, M35 HSS, 135 Degree Tip, Twist Jobber Length Drill Bit Kit for Hardened Metal, Cast Iron, Stainless Steel, Plastic and Wood with Storage Case, 1/16"-1/2"

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