Top 10 Best cobalt drill bit set in 2026

Last Updated - 6/14/2026

🏆Best Choice

DEWALT

DEWALT Drill Bit Set, 3-Flats Shank,14-Piece, 135 Degree Split Point, for Plastic, Wood and Metal (DWA1184)

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•135 Degree Split point tip design to help reduce walking
•High Speed Steel to be used in plastic, wood, and metal
•Tapered web design for extreme durability and resisting breakage
•Black and gold coating to help prevent rust and wear
•3-Flats shank to reduce spin-out in the chuck on sizes larger than 3/16-in
•Size markings on the drill bit shank for identifying sizes quickly

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$12.99

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LingGan

Metric Cobalt Drill Bits Set 1.5-6.5mm 13PCS, M35 high Speed Steel, high Hardness Straight Shank Drill, Mechanical or Hand Drill for Drilling, Suitable for Stainless Steel, Iron, Copper and Aluminum.

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•Exceptional Durability: Crafted with 5% Cobalt M35 HSS-CO material, ensuring outstanding wear resistance for long-term stability and reliability in high-intensity work.
•Versatile Multi-Material Application: Designed not only for hard metals but also for tackling stainless steel, cast iron, copper, and aluminum, making it an ideal choice for a variety of work scenarios.
•Professional-Grade Performance: More than just a set of drill bits, it's a professional-level drilling solution designed to tackle various challenges, ensuring efficient and accurate work results.
•Outstanding Heat Resistance: Advanced heat resistance ensures superior performance even in high-temperature environments, guaranteeing excellent results across different working conditions.
•Flexibility and Convenience: With 13 different specifications ranging from 1.5mm to 6.5mm, this drill bit set provides flexible options suitable for various engineering and project needs. The set's design ensures easy portability and convenient use and storage.

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$8.99

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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

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•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
•Surface-hardened tip – penetrates tough abrasive materials
•Includes – 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16", 3/8", 1/2"

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$39.00

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MACXCOIP

MACXCOIP Cobalt Drill Bit Set, 29Pcs M35 High Speed Steel Bits for Hardened Metals, Stainless Steel, Cast Iron and Wooden Plastics, with Metal Index Storage Box, 1/16"-1/2"

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•Various Sizes: 29 sets of drill bits include 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", 17/64", 9/32", 19/64", 5/16", 21/64", 11/32", 23/64“, 3/8", 25/64", 13/32", 27/64", 7/16, 29/64, 15/32", 31/64", 1/2", can meet more needs
•M35 Cobalt Drill Bit: The M35 cobalt drill bit is a durable, sharp and robust drill bit suitable for cutting stainless steel, iron castings, copper, aluminum and other soft metals as well as plastics, wood etc
•Quick and Efficient: The cobalt drill bit set can be used effectively on most soft and hard objects, with a 135 degree point tip and twist design for faster cutting, self-centering to prevent walk-off and faster chip and particle removal
•HSS Drill Bit Set: HSS Jobber Length Drill Bit Kit for hardened steel with excellent cutting performance. 29 sets of drill bits for long term use. The inserts are hardened and polished for improved sharpness and precise cutting without wobbling
•Easy Storage: The drill set includes drill holders with size indexes and is packaged in a small, strong package for easy storage and sorting. If you have any questions, please refer to us and we will be happy to help you

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$56.97

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Pro Edge Technology

Pro Edge Technology Cobalt Drill Bit Set, M35 High Speed Steel Drill Bits for Stainless Steel, Cast Iron and Wooden Plastics, DIY with Index Storage Box (Copper, 1/16"-1/4" 13pcs)

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•【Cost-effective combination】: The 13pcs set includes 13 sizes from 1/8" to 1/2" in 1/16" increments.The 29pcs set includes 29 sizes from 1/8" to 1/2" in 1/16" increments. With an average price per bit lower than the M35 Jobber Drill Bits market average price.
•Made of M35 material, which contains 5% cobalt, has higher wear resistance and heat resistance(3-5x Longer Life than M2 HSS Drill Bits).
•【135° Split Point & Twist Design】: The 135 degree design reduces the pressure required for the drill bit to penetrate materials, making it more suitable for hard materials and helping the drill bit self locate and not easily shake, ensuring machining accuracy. Twisted design allows for faster removal of debris.
•【Can Be Widely Used】: Suitable for cutting stainless steel, cast iron parts, copper, aluminum, and other soft metals, as well as plastics, wood, etc., whether it is woodworking, metal processing, home maintenance, or DIY, it can be easily handled.
•【Purchase Benefits】: The Jobber drill bits set includes a sturdy and aesthetically pleasing packaging box for easy storage and classification. Make sure you pull up the tab on the top of the case when opening to avoid damage. If you have any questions, please contact us and we are happy to assist you.

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$11.99

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GMTOOLS

GMTOOLS 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"

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•High Quality Material: The combination of high-speed steel black and gold oxide finish increases drill bit's corrosion resistance and wear resistance.
•135°Split Point: The 135 degree fast cutting point is automatically centered and penetrates quickly with less pressure, fully ground drill bit with sharp and durable cutting edge. Twist design for bring metal shavings up and out of the hole drill.
•Features: round straight shank, self-centering design prevents walking, fully ground twist design ensures a drilling performance by decreasing friction, easily for drilling materials includs stainless steel, cast iron, alloy, wood and hard plastics.
•Set Includes: 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 11/64, 3/16, 13/64, 7/32, 15/64, 1/4, 17/64, 9/32, 19/64, 5/16, 21/64, 11/32, 23/64, 3/8, 25/64, 13/32, 27/64, 7/16, 29/64, 15/32, 31/64 and 1/2 inch bits;Storage in a metal indexed case.
•Quality Commitment: If for any reason you are not satisfied with your purchase, please contact us. We provide 30-day money back. 100% Satisfaction Guarantee for risk-free shopping!

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$39.99

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Milwaukee

Milwaukee Electric - 23 PC RED Helix Cobalt Drill BIT Set

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•23PC RED HELIX COBALT DRILL BIT

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$47.41

$69.55

-32%

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DEWALT

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

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•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

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$29.99

$50.90

-41%

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Witwocky

Witwocky 29Pcs Cobalt Drill Bit Set 1/16"-1/2", 135 Degree Tip HSS with Black and Gold Finish with Storage Case, Twist Jobber Drill Bit Kit for Cast Iron, Hard Metal, Stainless Steel, Plastic and Wood

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•Various Sizes: 29pcs Including 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", 17/64", 9/32", 19/64", 5/16", 21/64", 11/32", 23/64", 3/8", 25/64", 13/32", 27/64", 7/16", 29/64", 15/32", 31/64" and 1/2".
•Premium Black and Gold: Made from high-speed steel with a black and gold oxide coating, these drill bits offer excellent corrosion and wear resistance, making them ideal for drilling through tough materials like stainless steel, cast iron, and hardened steel.
•Quick and Efficient: The cobalt drill bit set can be used effectively on most soft and hard objects, with a 135-degree point tip and twist design for faster cutting, self-centering to prevent walk-off, and faster chip and particle removal.
•HSS Drill Bit Set: HSS cobalt drill bit set for hardened steel with excellent cutting performance. Drill bits for long-term use. The inserts are hardened and polished for improved sharpness and precise cutting without wobbling.
•Provide long-term after-sales service: If you are unsatisfied with our product, we offer a 100% refund or replacement.

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$35.99

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Bosch

BOSCH CO14 14-Piece Assorted Set with Included Case Cobalt Metal Drill Bit with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, Light-Gauge Metal, Aluminum

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•TOUGH: The Bosch CO14 Drill Bit Set is manufactured from cobalt for drilling in hard and abrasive materials such as stainless, cast iron, and high-density metal. Also useful for general drilling in light-gauge metal, wood, and plastic.
•ACCURACY: Featuring a no-skate split-point tip for clean, precise holes and accurate starts.
•RELIABLE: The three-flat shank design promotes better grip and guards against slipping on bits 3/16 in. and larger
•PERFORMANCE: Designed for very high drilling temperatures for superior performance in stainless steel. Bosch Cobalt Metal Drill Bits are solid, reliable, and provide 4X longer life than standard high-speed drill bits.
•VERSATILITY: Includes highly visible, laser-etched marking to provide clearly marked bit diameter. Included bit sizes: 1/16 in., 5/64 in., 3/32 in., 7/64 in., 1/8 in., 9/64 in., 5/32 in., 3/16 in., 7/32 in., 1/4 in., 5/16 in., 3/8 in., 1/2 in.

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$39.29

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