Top 10 Best Cobalt Drill Bits [2022]

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Our team studied on 50013 reviews available online for Cobalt Drill Bits, chose the finest ones and prepared Cobalt Drill Bits Reviews for you. It was very difficult to shortlist the ideal Cobalt Drill Bits from thousands of products online. However, We tried to make sure that you get only the Best Cobalt Drill Bits from our suggestions. Check our listings-:

Best Cobalt Drill Bits
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Comparison Chart for Top 10 Best Cobalt Drill Bits

50013 reviews were considered when writing our recommendations for the Cobalt Drill Bits in this article.

NoProductScoreAction
1BOSCH CO2143 1/4 In. x 4 In. Cobalt Drill Bit9.8Buy on Amazon
2BOSCH CO14B 14 Pc. Cobalt M42 Drill Bit Set9.6Buy on Amazon
3Drill America - DWD29J-CO-PC 29 Piece M35 Cobalt Drill Bit Set in Round Case (1/16" - 1/2" X 64ths)9.6Buy on Amazon
41/8 Inch Cobalt Drill Bits(10Pcs)9.4Buy on Amazon
5Cobalt Drill Bit Set - 13 Piece M35 Cobalt Drill Bits with Storage Case - Perfect Drill Bits for Metal9Buy on Amazon
6Metric M42 8% Cobalt Twist Drill Bits Set for Stainless Steel and Hard Metal (1mm-10mm/19pcs)8.8Buy on Amazon
7IRWIN Drill Bit Set8.6Buy on Amazon
815 Pieces Cobalt Drill Bit Set M35 High Speed Steel Twist Drill Bit Set for Hardened Metal Stainless Steel Cast Iron Woodwork Plastic (1/8 Inch)8.6Buy on Amazon
9COMOWARE Cobalt Drill Bit Set- 15Pcs M35 High Speed Steel Twist Jobber Length for Hardened Metal8.4Buy on Amazon
10DEWALT Cobalt Drill Bit Set with Pilot Point8.2Buy on Amazon

Table Of Content:

1. 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.

2. 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 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

3. 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

4. 1/8 Inch Cobalt Drill Bits(10Pcs)

  • M35 COBALT HIGH SPEED STEEL】1/8″ drill bits for metal made from M35 Cobalt High Speed Steel and contain 5% Cobalt, which increases wear-resistance, durability and extra longer life span, so that the drill bits last through multiple uses.
  • 135° SPLIT POINT】135°quick-cut pilot split points are self-centering and can penetrate quickly with less pressure.
  • FULLY GROUND PROCESS】Fully ground spiral groove design clears particles quickly, decreases friction and heat for faster drilling performance.
  • PROFESSIONAL & WIDELY USE】Jobber drill bits perfectly Suitable for drilling holes as Stainless Steel, Copper, Cast Iron, Galvanized Pipe, Aluminum Alloy, Wood and Other Softer Metals.
  • EASY USE & STORAGE】This metal twist drill bits set includes 10pcs 1/8″ Cobalt Drill Bits, This drill bit fits the majority of power drill currently on the market and come with a portable plastic case for easy storage and DIY, household maintenance and repair.

5. Cobalt Drill Bit Set – 13 Piece M35 Cobalt Drill Bits with Storage Case – Perfect Drill Bits for Metal

  • 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″, 1/16″.
  • M35, Fully Ground, 135° Split Point – Our Drill Bits Contain 5% Cobalt, Are Fully Grounded for a Precision Drilling Diameter.
  • PLASTIC STORAGE CASE INCLUDED – Incredibly Tough and Durable Plastic Case.
  • 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, Titanium, and More!.
  • LIFETIME GUARANTEE – Here at Owl Tools (USA Based Company) we only care about your satisfaction.

6. 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.
  • 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 Drill Bit.
  • 19Pcs 135 Degree Split Point Drill Bits Includes :1mm(length:3.

7. 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

8. 15 Pieces Cobalt Drill Bit Set M35 High Speed Steel Twist Drill Bit Set for Hardened Metal Stainless Steel Cast Iron Woodwork Plastic (1/8 Inch)

  • Quality material: the cobalt drill bit set uses cobalt M35 high speed steel as material, this material is durable, strong and practical, with a long service life, heat and abrasion resistance; The cutting edge of drill bit is hardened and honed, with accurate cutting without shaking.
  • Creative twist design: metal cobalt drills for hardened steel has 135° split point tip and torsional design to improve cutting speed with self-centering ability; They can avoid walking during work process, while clearing chips and particles more quickly and easily.
  • Nice features: the 1/8 inch twist drill bits have precise diameter; M35 cobalt drill bits for hardened metal are not easy to break or wear out, so suitable for lithium electric drill, hand electric drill, impact electric drill, etc.
  • Various fitness: M35 high speed steel cobalt drill set is greatly suitable for hardened material and hard metals, such as cast iron, high temperature alloy, hard plastics, stainless steel, titanium alloy, woods, etc.
  • What you will get: the package contains 15 pieces 1/8 inch cobalt drill bits, sufficient quantity to meet your various needs; Please pay attention to speed, pressure and heat control during drilling.

9. 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.
  • TWIST DESIGN & PERFORMANCE: PRECISE 135°SPLIT POINT, gold oxide finish and round straight shanks.
  • PROFESSIONAL & WIDELY USE: M35 Cobalt HSS is more suitable for hardened material.
  • 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.

10. 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

Cobalt Drill Bits Buying Guide


Does the thought of finding a great Cobalt Drill Bits stress you out? Has your mind been juggling between choices when it comes to buying Cobalt Drill Bits in general, specifically regarding which model to choose?
If that’s the case, know that you’re not alone. Many people find it tough to buy the perfect Cobalt Drill Bits for themselves. We understand the stress associated with the buying process!
Since you’re here, you are obviously curious about Cobalt Drill Bits Reviews. You’ve been bombarded with information, so you need to find a reputable source with credible options before you make any decisions on which product would be best for your needs.
There are many sources that’ll provide you with that information- buying guides or ratings websites, word-of-mouth testimonials from friends or family members, online forums where users share their personal experiences, product reviews specifically found all over the internet and YouTube channels. Only thorough research will ensure that you get the right product.
But that’s not always easy, right? That's why we've taken time to compile a list of the best Cobalt Drill Bits in today's market, on your behalf, so that there will be no more worries for you.
How did we come up with the list, you ask? How did we create this buying guide?
  • First, our algorithms collected as much information available about these products from trusted sources.
  • We employed both Artificial Intelligence and large data volume to validate all collected information.
  • Then our AI ranked them on their quality-to-price ratio using industry-standard criteria that let us pick the best Cobalt Drill Bits currently on the market!
The products aren’t chosen randomly. We consider several criteria before assembling a list. Some of the criteria are discussed below-
  1. Brand Value: What happens when you go for a not-so-reputable brand just because the price seems cheap? Well, the chance of getting a short-lasting product goes higher. That’s because the renowned brands have a reputation to maintain, others don’t.
Top Cobalt Drill Bits brands try to offer some unique features that make them stand out in the crowd. Thus hopefully, you’ll find one ideal product or another in our list.
  1. Features: You don’t need heaps of features, but useful ones. We look at the features that matter and choose the top Cobalt Drill Bits based on that.
  2. Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products of higher specifications, but with the right balance.
  3. Customer Ratings: The hundreds of customers using the Cobalt Drill Bits before you won’t say wrong, would they? Better ratings mean better service experienced by a good number of people.
  4. Customer Reviews: Like ratings, customer reviews give you actual and trustworthy information, coming from real-world consumers about the Cobalt Drill Bits they used.
  5. Seller Rank: Now, this is interesting! You don’t just need a good Cobalt Drill Bits, you need a product that is trendy and growing in sales. It serves two objectives. Firstly, the growing number of users indicates the product is good. Secondly, the manufacturers will hopefully provide better quality and after-sales service because of that growing number.
  6. Value For The Money: They say you get what you pay for. Cheap isn’t always good. But that doesn’t mean splashing tons of money on a flashy but underserving product is good either. We try to measure how much value for the money you can get from your Cobalt Drill Bits before putting them on the list.
  7. Durability: Durability and reliability go hand to hand. A robust and durable Cobalt Drill Bits will serve you for months and years to come.
  8. Availability: Products come and go, new products take the place of the old ones. Probably some new features were added, some necessary modifications were done. What’s the point of using a supposedly good Cobalt Drill Bits if that’s no longer continued by the manufacturer? We try to feature products that are up-to-date and sold by at least one reliable seller, if not several.
  9. Negative Ratings: Yes, we take that into consideration too! When we pick the top rated Cobalt Drill Bits on the market, the products that got mostly negative ratings get filtered and discarded.

These are the criteria we have chosen our Cobalt Drill Bits on. Does our process stop there? Heck, no! The most important thing that you should know about us is, we're always updating our website to provide timely and relevant information.
Since reader satisfaction is our utmost priority, we have a final layer of filtration. And that is you, the reader! If you find any Cobalt Drill Bits featured here Incorrect, irrelevant, not up to the mark, or simply outdated, please let us know. Your feedback is always welcome and we’ll try to promptly correct our list as per your reasonable suggestion.