20 Best Cobalt Drill Bits [2024]

Are you looking for the best cobalt drill bits? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling cobalt drill bits.

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# Preview Product
1 BOSCH CO14B 14 Pc. Cobalt M42 Drill Bit Set BOSCH CO14B 14 Pc. Cobalt M42 Drill Bit Set
2 DEWALT Cobalt Alloy Steel Drill Bit Set with Pilot Point, 14-Piece (DWA1240) DEWALT Cobalt Alloy Steel Drill Bit Set with Pilot Point, 14-Piece (DWA1240)
3 COMOWARE Cobalt Drill Bit Set- 15Pcs M35 High Speed Steel Twist Jobber Length for Hardened Metal,... COMOWARE Cobalt Drill Bit Set- 15Pcs M35 High Speed Steel Twist Jobber Length for Hardened Metal,...
4 Drill America - DWD29J-CO-PC 29 Piece M35 Cobalt Drill Bit Set in Round Case (1/16' - 1/2' X 64ths),... Drill America - DWD29J-CO-PC 29 Piece M35 Cobalt Drill Bit Set in Round Case (1/16" - 1/2" X...
5 IRWIN Drill Bit Set, M35 Cobalt Alloy Steel Steel, 29-Piece (3018002) IRWIN Drill Bit Set, M35 Cobalt Alloy Steel Steel, 29-Piece (3018002)
6 Cobalt Drill Bit Set - 13 Piece M35 Cobalt Drill Bits with Storage Case - Perfect Drill Bits for... Cobalt Drill Bit Set - 13 Piece M35 Cobalt Drill Bits with Storage Case - Perfect Drill Bits for...
7 BeHappy Drill Bit Set 29pcs, M35 Cobalt Drill Bit Set, High Speed Steel Twist Drill Bit Set for... BeHappy Drill Bit Set 29pcs, M35 Cobalt Drill Bit Set, High Speed Steel Twist Drill Bit Set for...
8 DEWALT Drill Bit Set, Pilot Point, Cobalt Alloy Steel, 29-Piece (DWA1269) DEWALT Drill Bit Set, Pilot Point, Cobalt Alloy Steel, 29-Piece (DWA1269)
9 Metric M42 8% Cobalt Twist Drill Bits Set for Stainless Steel and Hard Metal (1mm-10mm/19pcs) Metric M42 8% Cobalt Twist Drill Bits Set for Stainless Steel and Hard Metal (1mm-10mm/19pcs)
10 amoolo Cobalt Drill Bit Set (1/16'-1/4',13 Pcs), M35 HSS Metal Drill Bits for Steel, Stainless... amoolo Cobalt Drill Bit Set (1/16"-1/4",13 Pcs), M35 HSS Metal Drill Bits for Steel, Stainless...
11 Drill America - D/A29J-CO-PC 29 Piece M42 Cobalt Drill Bit Set in Round Case (1/16' - 1/2' X 64ths),... Drill America - D/A29J-CO-PC 29 Piece M42 Cobalt Drill Bit Set in Round Case (1/16" - 1/2" X...
12 BOSCH 21 Piece Cobalt Metal Drill Bit Set CO21 BOSCH 21 Piece Cobalt Metal Drill Bit Set CO21
13 INTOO Hss Cobalt Drill Bits Set 21PCS INTOO Hss Cobalt Drill Bits Set 21PCS
14 CO-Z Step Drill Bits, HSS 5PCS Titanium Step Drill Bit Set, 50 Sizes in 5 High Speed Steel Unibit... CO-Z Step Drill Bits, HSS 5PCS Titanium Step Drill Bit Set, 50 Sizes in 5 High Speed Steel Unibit...
15 3/16-Inch Cobalt Steel M35 Jobber Length Twist Drill Bits for Hard Metal, Stainless Steel, Pack of... 3/16-Inch Cobalt Steel M35 Jobber Length Twist Drill Bits for Hard Metal, Stainless Steel, Pack...
16 1/8-Inch Cobalt Steel M35 Jobber Length Twist Drill Bits for Hard Metal, Stainless Steel, Pack of 12 1/8-Inch Cobalt Steel M35 Jobber Length Twist Drill Bits for Hard Metal, Stainless Steel, Pack of 12
17 Hymnorq 3/8 Inch Fractional Size M35 Cobalt Steel Twist Drill Bit Set of 5pcs, Jobber Length and... Hymnorq 3/8 Inch Fractional Size M35 Cobalt Steel Twist Drill Bit Set of 5pcs, Jobber Length and...
18 Drill Hulk 13-Piece M35 Cobalt Drill Bit Set for Hard Metal, Stainless Steel, 1/16-Inch to 1/4-Inch,... Drill Hulk 13-Piece M35 Cobalt Drill Bit Set for Hard Metal, Stainless Steel, 1/16-Inch to...
19 5/16-Inch Cobalt Steel M35 Jobber Length Twist Drill Bits for Hard Metal, Stainless Steel, Pack of 6 5/16-Inch Cobalt Steel M35 Jobber Length Twist Drill Bits for Hard Metal, Stainless Steel, Pack of 6
20 Drill America 29 Piece m42 Cobalt Drill Bit Set (1/16' - 1/2' X 64ths), D/ACO Series Drill America 29 Piece m42 Cobalt Drill Bit Set (1/16" - 1/2" X 64ths), D/ACO Series
SaleBestseller No. 1
BOSCH CO14B 14 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...
  • 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
SaleBestseller No. 2
DEWALT Cobalt Alloy Steel Drill Bit Set with Pilot Point, 14-Piece (DWA1240)
  • 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
SaleBestseller No. 3
COMOWARE Cobalt Drill Bit Set- 15Pcs M35 High Speed Steel Twist Jobber Length for Hardened Metal,...
  • 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...
  • PROFESSIONAL & WIDELY USE: M35 Cobalt HSS is more suitable for hardened material. Particularly successful in cutting through hard metals such as...
  • 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"...
  • 100% SATISFACTION GUARANTEE: If you are not 100% satisfied with your purchase for any reason whatsoever simply please feel free to contact us.
SaleBestseller No. 4
Drill America - DWD29J-CO-PC 29 Piece M35 Cobalt Drill Bit Set in Round Case (1/16" - 1/2" X 64ths),...
  • 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
Bestseller No. 5
IRWIN Drill Bit Set, M35 Cobalt Alloy Steel Steel, 29-Piece (3018002)
  • 29 Piece
  • Cobalt Alloy Steel Drill Bit Set
  • Sizes 1/16 inch -1/2 inch in 1/64 inch increments, 135 Degree Split Point To Minimize Walk
  • 5% Cobalt Alloy Steel For Higher Heat & Abrasion Resistance
  • Heavy Duty Web Construction For Strength & Durability
SaleBestseller No. 6
Cobalt Drill Bit Set - 13 Piece M35 Cobalt Drill Bits with Storage Case - Perfect Drill Bits for...
  • SET OF 13 COBALT DRILL BITS - In the following imperial sizes 1/4", 15/64", 7/32", 13/64", 3/16", 11/64", 5/32", 9/64", 1/8", 7/64", 3/32", 5/64",...
  • M35, Fully Ground, 135° Split Point - Our Drill Bits Contain 5% Cobalt, Are Fully Grounded for a Precision Drilling Diameter. 135° Split Point...
  • PLASTIC STORAGE CASE INCLUDED - Incredibly Tough and Durable Plastic Case. Perfect for Keeping Your Cobalt Drill Bits Neatly Organized and Safe.
  • COBALT DRILL BITS ARE THE PERFECT DRILL BITS FOR METAL - As well as other hard materials such as Stainless Steel, Hardened Steel, Cast Iron, Bronze,...
  • LIFETIME GUARANTEE - Here at Owl Tools (USA Based Company) we only care about your satisfaction. We try our best to ensure each product is in perfect...
Bestseller No. 7
BeHappy Drill Bit Set 29pcs, M35 Cobalt Drill Bit Set, High Speed Steel Twist Drill Bit Set for...
  • 🔨【VARIOUS SIZES】: 29 sets of drill bits include 1/16 inch, 5/64 inch, 3/32 inch, 7/64 inch, 1/8 inch, 9/64 inch, 5/32 inch, 11/64 inch, 3/16...
  • 🔨【HSS DRILL BIT SET】: HSS cobalt drill set is suitable for hardened steel and has excellent cutting performance. 29 sets of drill bits can be...
  • 🔨【FEATURES of M35 COBALT】: M35 cobalt drill bit set can effectively drill tough and high tensile strength materials. The drill bit is...
  • 🔨【135 DEGREES POINTS】: Cobalt drill bit set can be effectively used for most hard and soft objects, 135 degrees point nib and twist design,...
  • 🔨【STORAGE RACKS MADE of GERMAN CRAFTSMANSHIP】: The cobalt drill bit set includes a drill rack with a size index. The drill rack adopts German...
SaleBestseller No. 8
DEWALT Drill Bit Set, Pilot Point, Cobalt Alloy Steel, 29-Piece (DWA1269)
  • Designed for maximum speed and life
  • Pilot point and split tip design
  • No bit walking - more user control
  • Intended to be used on hard metals
SaleBestseller No. 9
Metric M42 8% Cobalt Twist Drill Bits Set for Stainless Steel and Hard Metal (1mm-10mm/19pcs)
  • Premium M42 8% Cobalt Steel ,68-70 HRC (Rockwell Hardness Scale) ,Usually Give the Best Heat,Wear and Chip Resistance and Long Tool Life.
  • 3 Steps Desigh for Cutting through Stainless Steel,Hard Metals,Aluminum,Plastic.
  • This Cobalt Drill Bit is Typically Capable of Running Three to Five Times Faster.Despite the Higher Price,the Cost Per Hole When Using Cobalt Drill...
  • The Sufficiently Sharp Bit Edge Can Cut the Metal Material into Long Strips of Iron Chips rather than Slowly Grinding Throng the Material with a Blunt...
  • 19Pcs 135 Degree Split Point Drill Bits Includes :1mm(length:3.4cm) 1.5mm 2mm 2.5mm 3mm 3.5mm 4mm 4.5mm 5mm(length:8.5cm) 5.5mm 6mm(length:9cm) 6.5mm...
SaleBestseller No. 10
amoolo Cobalt Drill Bit Set (1/16"-1/4",13 Pcs), M35 HSS Metal Drill Bits for Steel, Stainless...
  • 【Premium Quality】Made of industry grade 6542 high speed steel, Cobalt twist drill bits are harder than 4241/4341 HSS used in other similar bits,...
  • 【Most Commonly-Used 13 Sizes】A complete combo set of 13 jobber length industrial drill bits for metal drilling...
  • 【Precise & Efficient Drilling Performance】✔ Fully Ground spiral groove design clears particles quickly, decreases friction and heat for a faster...
  • 【Multiple Application】Perfectly suitable for cutting through Hard Metal such as Stainless Steel, Steel, Sheet Metal and Cast Iron as well as...
  • 【90 Days Warranty】At Amoolo, we center on customer satisfaction. Get your drill bits today along with our 90-day Hassle-Free Warranty Policy,...
Bestseller No. 11
Drill America - D/A29J-CO-PC 29 Piece M42 Cobalt Drill Bit Set in Round Case (1/16" - 1/2" X 64ths),...
  • Set contains 29 m42 Cobalt Drill Bits sizes 1/16" - 1/2" x 1/64" increments
  • Cobalt Drills are effective in drilling tough, high tensile strength materials like stainless steel, Inconel, and titanium
  • Gold oxide finish acts as a lubricant and provides wear resistance
  • 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
SaleBestseller No. 12
BOSCH 21 Piece Cobalt Metal Drill Bit Set CO21
  • TOUGH: The Bosch CO21 Drill Bit Set is manufactured from cobalt for drilling in hard and abrasive materials such as stainless, cast iron, and...
  • 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,...
  • VERSATILITY: Includes 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...
Bestseller No. 13
INTOO Hss Cobalt Drill Bits Set 21PCS
  • SPECIFICATIONS:21PCS COBALT DRILL BIT SET:...
  • GOLDEN RATIO TIP:From size 5/32" with patented "Golden Ratio" Tip,which especially designed for heavy duty purpose, effect clean&smooth holes...
  • COBALT 5% MATERIAL: suitable for stainless steel or any hard metal,significantly increases the ware-resistance and durability.
  • STORAGE BOX:strong metal box.
  • HOW TO USE:controlling the drilling speed by lowest RPM would make drill life much longer than 3 times.
Bestseller No. 14
CO-Z Step Drill Bits, HSS 5PCS Titanium Step Drill Bit Set, 50 Sizes in 5 High Speed Steel Unibit...
  • Extreme Durabikity: Cobalt high speed steel drill bits along with the titanium coating ensures extreme durability, will stay new and shiny for years...
  • Different Sizes of Holes Can Be Drilled: Different sized shanks ensure compatibility with 1/4, 3/8 and 1/2 in. chuck sizes. You are capable to drill...
  • Smooth Drilling: Non-walking drill tip provides fast and smooth drills on steel sheets, aluminum sheets, wood board, plastic board etc. (the board...
  • Use Center Punch to Mark the Spot: Please mark the spot that you are to drill for easier drilling and improved drill bits life.
  • Keep Your Step Drill Bits Well Organized: All the bits come in a well-organized case for easy transport and storage.
Bestseller No. 15
3/16-Inch Cobalt Steel M35 Jobber Length Twist Drill Bits for Hard Metal, Stainless Steel, Pack of...
  • JOBBER LENGTH: 3/16-inch cutting diameter, 2-5/16-inch flute length, 3-1/2-inch overall length, 135 degree split point, 3-flat shank
  • MADE FROM HIGH-SPEED STEEL AND 5% COBALT: improve much higher heat resistance because of cobalt steel's high red hardness, provide strong durable...
  • CAN BE REPEATEDLY SHARPENED AS NEEDED: cobalt drill bit's hardness is uniform throughout the entire material, so that can be repeatedly sharpened...
  • APPLICATION: best used for drilling in hard metal, including stainless steel
  • INCLUDE: 12 pieces of 3/16-inch cobalt drill bits with case
Bestseller No. 16
1/8-Inch Cobalt Steel M35 Jobber Length Twist Drill Bits for Hard Metal, Stainless Steel, Pack of 12
  • JOBBER LENGTH: 1/8-inch cutting diameter, 1-5/8-inch flute length, 2-3/4-inch overall length, 135 degree split point, straight shank
  • MADE FROM HIGH-SPEED STEEL AND 5% COBALT: improve much higher heat resistance because of cobalt steel's high red hardness, provide strong durable...
  • CAN BE REPEATEDLY SHARPENED AS NEEDED: cobalt drill bit's hardness is uniform throughout the entire material, so that can be repeatedly sharpened...
  • APPLICATION: best used for drilling in hard metal, including stainless steel
  • INCLUDE: 12 pieces of 1/8-inch cobalt drill bits with case
Bestseller No. 17
Hymnorq 3/8 Inch Fractional Size M35 Cobalt Steel Twist Drill Bit Set of 5pcs, Jobber Length and...
  • COBALT STEEL - Manufactured from M35 grade cobalt steel, with molybdenum and cobalt added to creates a hardened alloy, measuring Rockwell hardness up...
  • FOR METALWORKING - Particularly successful in cutting through hard metals(hardness less than HRC38°) such as stainless steel and cast iron, although...
  • SELF CENTERING - The 135°quick-cut pilot split points are self-centering and can penetrate quickly with less pressure. The bits will not "walk" or...
  • 5PC SET - The set includes 5pcs of 3/8” diameter M35 grade cobalt steel twist drill bits, packed in a convinient and reuseable PVC case for easy...
  • DOWNLOADABLE USER GUIDE - We've summed up some tips of drilling metals, including a RPM chart for several common metals, based on our reviews and some...
Bestseller No. 18
Drill Hulk 13-Piece M35 Cobalt Drill Bit Set for Hard Metal, Stainless Steel, 1/16-Inch to 1/4-Inch,...
  • JOBBER LENGTH: jobber length cobalt drill bit, 135 degree split point reduces drill walking, 3-flat shank provides a secrue grip in chucks
  • MADE FROM HIGH-SPEED STEEL AND 5% COBALT: improve much higher heat resistance because of cobalt steel's high red hardness, provide strong durable...
  • CAN BE REPEATEDLY SHARPENED AS NEEDED: cobalt drill bit's hardness is uniform throughout the entire material, so that can be repeatedly sharpened...
  • APPLICATION: best used for drilling in hard metal, including stainless steel
  • INCLUDE: 13 pieces cobalt drill bits in inch sizes 1/16" to 1/4" (1/64" increments) with plastic case
Bestseller No. 19
5/16-Inch Cobalt Steel M35 Jobber Length Twist Drill Bits for Hard Metal, Stainless Steel, Pack of 6
  • JOBBER LENGTH: 5/16-inch cutting diameter, 3-3/16-inch flute length, 4-1/2-inch overall length, 135 degree split point, 3-flat shank
  • MADE FROM HIGH-SPEED STEEL AND 5% COBALT: improve much higher heat resistance because of cobalt steel's high red hardness, provide strong durable...
  • CAN BE REPEATEDLY SHARPENED AS NEEDED: cobalt drill bit's hardness is uniform throughout the entire material, so that can be repeatedly sharpened...
  • APPLICATION: best used for drilling in hard metal, including stainless steel
  • INCLUDE: 6 pieces of 5/16-inch cobalt drill bits with case
Bestseller No. 20
Drill America 29 Piece m42 Cobalt Drill Bit Set (1/16" - 1/2" X 64ths), D/ACO Series
  • Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel...
  • Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated...
  • 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

Having trouble finding a great cobalt drill bits?

This problem is well understood by us because we have gone through the entire cobalt drill bits research process ourselves, which is why we have put together a comprehensive list of the best cobalt drill bitss available in the market today.

After hours of searching and using all the models on the market, we have found the best cobalt drill bits for 2023. See our ranking below!

How Do You Buy The Best Cobalt Drill Bits?

Do you get stressed out thinking about shopping for a great cobalt drill bits? Do doubts keep creeping into your mind?

We understand, because we’ve already gone through the whole process of researching cobalt drill bits, which is why we have assembled a comprehensive list of the greatest cobalt drill bits available in the current market. We’ve also come up with a list of questions that you probably have yourself.

John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for cobalt drill bits that you consider buying. Your questions might include the following:

  • Is it worth buying an cobalt drill bits?
  • What benefits are there with buying an cobalt drill bits?
  • What factors deserve consideration when shopping for an effective cobalt drill bits?
  • Why is it crucial to invest in any cobalt drill bits, much less the best one?
  • Which cobalt drill bits are good in the current market?
  • Where can you find information like this about cobalt drill bits?

We’re convinced that you likely have far more questions than just these regarding cobalt drill bits, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for cobalt drill bits, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible cobalt drill bits. Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an cobalt drill bits buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information.

How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available cobalt drill bits currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of cobalt drill bits has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an cobalt drill bits?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your cobalt drill bits.
  5. Customer Ratings: Number ratings grade cobalt drill bits objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their cobalt drill bits.
  7. Product Quality: You don’t always get what you pay for with an cobalt drill bits, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an cobalt drill bits is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining cobalt drill bits information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding cobalt drill bits is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

FAQ:

Q: Who makes the best drill bits?

A: Dewalt – Guaranteed tough. … Makita – Leader in power tool technology. … BOSCH – Tools for Professionals. … Craftsman – Best for durability&quality. … Neiko – Constructed with higher quality materials. … Irwin – Best quality and a great price. … BLACK+DECKER – Reliable and trusted brand. … Viking Drill – Best for quality,consistency and service. …

Q: How to choose the best drill bits?

A: Drill bit material: HSS or tungsten carbide The fit: will depend on the machine used. Diameter Drill bit type: twist,step,reamer,center,conical,insert Drill bit coating Bit angle Bit length (short or long)

Q: Which drill bit is stronger carbide or cobalt?

A: The carbide bits are widely used in industrial application for drilling nonferrous heavy metals, cast iron and abrasive materials. Carb drills keep sharp cutting edge much longer than Cobalt drill bits and cutting speed is higher too as carbide absorb heat better. Drill bits with carbide inserts are effective in making shallow holes and much cheaper than solid carbide tools. Full body cemented carbide drill bits have superior combination of toughness, strength and durability.

Q: What drill bit is best drill?

A: When we say they’re the 10 best, we really do mean the cream of the crop … we started with ¼-inch Bosch Multi-Purpose bits to see how fast each drill could make a hole 3 inches deep in a 4000 PSI solid concrete block. We intentionally skipped Hilti …

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