Top 10 Picks Best Step Drill Bits Cobalt Steel For 2022

Top 10 Picks Best Step Drill Bits Cobalt Steel For 2023

Are you trying to find the best step drill bits cobalt steel? Overwhelmed by all the options? Welcome to your destination. The following is a comprehensive guide to buying step drill bits cobalt steel. If you are uncertain where to start your research, do not worry; we have you covered.

The sheer number of options out there makes going through thousands of reviews extremely frustrating. Look over the reviews, then make an informed purchasing decision based on this ultimate guide.

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10 Best step drill bits cobalt steel Reviews in 2023

1. STROTON 4-32mm Metric 6% Cobalt Step Drill Bit for Stainless Steel and Hard Metal (15 Steps)

Features :

  • Premium M35 6% Cobalt Steel ,66-69 HRC (Rockwell Hardness Scale) ,Usually Give the Best Heat,Wear and Chip Resistance and Long Tool Life.
  • Grinding the Cutting Edge Three Times,with the High HRC and Heat Resistance of the Material,Desigh for Cutting through Stainless steel , Iron plate, Aluminum,Ducts,Wood,PVC and Plastic.
  • This Cobalt Step Drill Bit is Typically Capable of Running Two to Three Times Faster.Despite the Higher Price,the Cost Per Hole When Using Cobalt Drill Bit Will be the Lowest,Since It Can Produce So Many More Holes.
  • [4-32mm] 15 Steps (4mm,6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm,22mm,24mm,26mm,28mm,30mm,32mm)

2. CO-Z Cobalt Added M35 Step Drill Bit, Spiral Step Drill Bit, Unibit Drill Bit for Cutting Drilling Holes On Stainless Steel, Steel, Metal Sheet, Multiple Hole Stepped Up Bit for Professionals

Features :

  • Durable & Sturdy W/Cobalt Added —– Solid M35 molybdenum high speed construction with cobalt added for extra durability, close to impossible to snap compared conventional drill bits, the unique 3-sided shank prevents slip in drill chuck and reduces shocks; oiling the bits recommended before every use to maximize the service life.
  • Jam-Free Performance —– Dual-flute design and three-sided shank design is optimized for cordless drills in high speed provides greater speed and control while minimizing steel scurf flying around, to lengthen service life, please do not set drilling speed at its maximum to avoid damage to the cutting edge.
  • One Bit for All —– Every bit comes with 10 sizes so you can drill up to 10 holes with different diameters, saving you time and efforts to change bits, every package comes with 5 bits, that makes it 50 diameters in total.
  • Universal Compatibility —– Designed for drilling on steel sheets up to 0.08 in., acrylic, PVC and wooden boards up to 0.2 in.; marked with obvious marks for easy and precise hole drilling, compatible with drills 1/4”,3/8”,1/2”

Additional Info :

3. Metric M42 8% Cobalt Twist Drill Bits Set for Stainless Steel and Hard Metal (1mm-10mm/19pcs)

Features :

  • 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 Bit Will be the Lowest,Since It Can Produce So Many More Holes.
  • 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:3.4cm) 1.5mm 2mm 2.5mm 3mm 3.5mm 4mm 4.5mm 5mm(length:8.5cm) 5.5mm 6mm(length:9cm) 6.5mm 7mm 7.5mm 8mm(length:11.5cm) 8.5mm 9mm 9.5mm 10mm(length:13cm) [DIA 0.5mm Increments] .

4. CO-Z Step Drill Bits, HSS 5PCS Titanium Step Drill Bit Set, 50 Sizes in 5 High Speed Steel Unibit Drill Bits Set for Sheet Metal with Aluminum Case, Multiple Hole Stepped Up Bits for DIY Lovers33

Features :

  • Extreme Durabikity: Cobalt high speed steel drill bits along with the titanium coating ensures extreme durability, will stay new and shiny for years to come.
  • 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 holes in different sizes which can meet your normal needs.
  • Smooth Drilling: 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).
  • 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.

Additional Info :

Color Dark Bronze
Item Dimensions
Height 6.299212592
Width 1.968503935
Length 4.9212598375
Weight 1.1464037624

5. Rokrou M35 HSS Step Drill Bit Cobalt Metal Drill Bit for Steel Double Spiral Groove,6 Steps Size from 3/16″ (4.8mm) to 1/2″(12.7mm), 1/4″(6.4mm) Hex Shank for Stainless Steel, Wood, Plastic

Features :

  • 【?????? ???? ????】Rokoru’s step drill bits are made of M35 high-speed steel and contain cobalt, which makes the step drill bit incredibly harder. The titanium-carbon nitride process provides an extraordinary anti-oxidation and corrosion coating. Our step drill will last longer and be more wear-resistant than a conventional M2 step drill bit. M35 step drill is the best choice in the drilling tool category and only material can drill on stainless steel efficiently.
  • 【???????? ????? ????? ??????? ??????】The head of the step drill bit is a 118° X-shaped unique design, which effectively avoids walking when you start drilling. Thanks to cobalt in the drill, it can be used with higher speed than other hss material, saves you time and leaves clean holes.
  • 【?????? ?????? ?????? ??????】The double spiral design is a high-light point of step drill bit for metal. It reduces resistance during drilling , prevents metal cracking, effectively dissipates heat, and rapidly removes chips, which makes the entire work process smoother and safer.
  • 【??? ?? ????】Step drill has multi-steps turns out to be super handy when you need holes of varied sizes or you need to expand existing holes. Each step of the step is laser-engraved and easy to read. You don’t need an expensive M35 jobber drill set that cost you a fortune. You just need one of our step drills.
  • 【????????? ????????????】The step drill bit has great versatility and will work twice as efficiently by using it with an impact wrench. It also covers a wide range of applications, from wood, copper, PVC, cast iron, and even mold steel and stainless steel.

Additional Info :

Item Dimensions
Height 3.94
Width 0.79
Length 0.79

6. TEMO M35 Cobalt Double Flute Step Drill, 9 Size From 1/4 Inch To 3/4 Inch, 3/8 Inch Shank

Features :

  • M35 cobalt step drill 3/8″ (9.52mm) shank 9 hole 1/4″ (6.35mm) to 3/4″ (19.05mm)
  • 9 hole sizes: 1/4″ (6.35mm), 5/16″ (7.94mm), 3/8″ (9.52mm), 7/16″ (11.11mm), 1/2″ (12.7mm), 9/16″ (14.29mm), 5/8″ (15.88mm), 11/16″ (17.46mm), 3/4″ (19.05mm), with 1/16″ (1.59mm) increments. 3/8 Inch Shank with 3 flats to eliminate slipping
  • Smooth cutting double-fluted design for true round hole; Self-starting for clean holes in thin materials
  • The step drill bit is made with M35 cobalt. It is ideal for variety of materials from stainless steel, metal, plastic, fiberglass to wood. They also help to enlarge existing holes. M35 HSSCo is a high speed steel alloy made up of 5% cobalt. M35 is similar to M2, but with 5% cobalt added.
  • The addition of cobalt increases heat resistance. It is widely used in metal manufacturing because of its ability to resist wear over conventional high speed steels, allowing for shorter cycle times in production environments due to higher cutting speeds or from the increase in time between tool changes. M35 is also less prone to chipping when used for interrupted cuts.

Additional Info :

Color Silver
Item Dimensions
Height 1
Width 1
Length 3
Weight 3

7. Irwin Industrial Tools 10234CB #4 Unibit 3/16- Inch – 7/8-Inch, 12-Steps Cobalt Step Drill Bit (1/16- Inch Steps)

Features :

  • Cobalt high speed steel for extended cutting edge life makes it ideal for drilling stainless steel
  • Drills 12 different hole sizes, from 3/16″ to 7/8″ by 16ths
  • SpeedPoint tip prevents “walking,” gets fast starts, and eliminates the need for pilot/starting hole
  • Single-flute cutting edge drills true round holes with smooth, clean finish

Additional Info :

Color Black
Item Dimensions
Height 0.98
Width 3.13
Length 7.13
Weight 0.000625

8. CO-Z 10 Sizes Titanium Step Drill Bit, 1/4 to 1-3/8 Inches High Speed Steel Drill Cone Bits for Sheet Metal Hole Drilling Cutting, HSS Multi Size Hole Stepped Up Unibit for DIY Lovers Electrician

Features :

  • Hss & Titanium Coating —– High-speed steel makes it last longer than others, titanium coating ensure easily cut through iron sheets, aluminum sheets, copper & plastic & wood board and many other types of sheet metal with ease, and it can automatically deburr holes while drilling to keep the drill bit clean.
  • Titanium Coating —– Coated with titanium, this step drill set performs well in heat, corrosion and rust resistance.
  • Revolutionary Design —– Tri-flatted shank fits into power tools chuck securely and eliminates slip; two-flute design clears chips faster and allows particles to escape easily.
  • Includes 10 STEP SIZES —– 1/4″, 3/8″, 1/2″, 5/8″, 3/4″, 7/8″, 1″, 1-1/8″, 1-1/4″, 1-3/8″.
  • A Must-Have for Handyman or Professionals —– Perfect for home repairs and light jobs such as drilling holes in plastic, aluminum, copper, iron and many other types of sheet metal (excluding steel or any other harder metal).

Additional Info :

9. MonkeyKingBar- 5pcs Step Drill Bits for Metal with Automatic Center Punch – High-Speed Metal Steel Cobalt Multiple Hole,Double Cutting Blades

Features :

  • [Wide Use ]: Suitable for using to cut holes in a variety of materials including steel, brass, wood, plastic
  • [Different sized shanks]: Tri-flatted shank ensure compatibility with chuck sizes. Field construction, a ladder drill for a variety of specifications
  • [Unique ladder structure]: a bit can open a variety of sizes and aperture, a ladder drill on a box of drill bits.
  • [Double spiral groove]: fast chip removal,Minimal shocks and almost impossible to snap compared to conventional bits
  • [TWO KINDS OF CHIP SPACE]: It can be divided from 5 steps to 13 steps , divided into straight grooves and spiral grooves.

10. Step Drill Bit Set, Step Bit for Metal, Titanium High Speed Steel Cobalt 50 Sizes (1/8”-1 3/8”) with Automatic Center Punch and Aluminum Case, Multiple Hole Stepped Up Bits for DIY Lovers (6-Piece Set)

Features :

  • ✅ Two-fluted design provides faster,smoother cutting,provided with small pressure and the sets.
  • ✅ The 3-flat shank titanium drill uses a doubleedged design to make cutting smoother and smoother;Increases cutting speed with self-centering and prevents walking.
  • ✅ Perfect for home repairs and light jobs such as drilling holes in plastic, aluminum, copper, iron sheet and many other types of sheet metal (excluding steel or any other harder metal).
  • ✅ Classic High Speed Steel With Titanium Coating For Proven Capability and Durability. Increases Cutting Speed With Self-Centering And Prevents Walking.
  • ✅ Your customer satisfaction and 30-day warranty of step drill bit can be guaranteed.

Additional Info :

How To Choose The step drill bits cobalt steel

Is finding an excellent step drill bits cobalt steel a stressful experience? Have you ever been unsure what model to buy when considering the purchase of step drill bits cobalt steel in general?

Knowing you’re not alone is sometimes all you need. There are many people who have difficulty finding the perfect step drill bits cobalt steel for themselves. This is why we are here to help!

You have obviously come to this page to learn more about Cheap step drill bits cobalt steel Reviews. There is a lot of information out there, so to make an informed decision, find a reputable source with a variety of options before committing.

The information you seek can come from many sources – buying guides, ratings websites, word-of-mouth recommendations, online forums where users give their personal experiences, independent product reviews found throughout the internet, and even YouTube channels. The best products can only be found through thorough research.

Right? But isn’t it not always easy to do that? Therefore, we have taken the time to compile a list of the top step drill bits cobalt steel products on the market, for your benefit, so that you don’t need to worry.

What led us to compile this list? Why did we make this buying guide?

  • Firstly, we used our algorithms to gather the information about the products that were available from reliable sources.
  • To validate all collected information, both Artificial Intelligence and large data volumes were used.

Our artificial intelligence then evaluated them based on quality-to-price ratios using industry-standard criteria to find the step drill bits cobalt steel on the market!

We don’t choose the products at random. Before assembling a list, we take into account several factors. Following are some of the factors we consider:

Brand Value:

If you purchase an unreliable brand just because it is cheap, what will happen? The likelihood of getting an unreliable product increases. The renowned brands are more concerned about maintaining their reputations, while others are not.

The step drill bits cobalt steel brands are known for their unique features that distinguish them from the competition. We hope, therefore, that there is a product in our list that will meet your needs.


A few useful features are all that you need. In choosing the top step drill bits cobalt steel, we look at the features that really matter.


Quantitative measures of quality are always easy to make when you have numbers at your disposal. As a company, we are striving to find products that exceed the standard, but with the step drill bits cobalt steel right balance.

Customer Ratings:

Customers who have used the [REPLACE_KEYWORD] before you won’t accuse you of wrongdoing, will they? A good number of people will be pleased with the service, if you have better ratings.

Customer Reviews:

A customer review gives you authentic and reliable information about step drill bits cobalt steel, coming from real people who have used it.

Seller Rank:

That’s very interesting, now isn’t it? It’s not just about having a good step drill bits cobalt steel, you also have to offer a popular, growing product. Both objectives are met.

It is clear that the product is successful based on its increasing user base. Because of that growing number, the manufacturers should be able to provide better after-sales service and quality.

Value For The Money:

There is a saying about getting what you pay for. The cheapest thing is never the best. Consequently, spending a lot of money on a product that has no real value is also not a good idea. Putting your step drill bits cobalt steel on the list involves evaluating what you get for the money you spend.


Reliability and durability are closely related. With a robust and durable step drill bits cobalt steel, you’ll be able to use it for many months to come.


A new product replaces an old product every now and then. It probably has some new features, it may have been modified somehow.

Supposedly good products such as step drill bits cobalt steel no longer exist because the manufacturer will no longer support them? As much as possible, we try to present products from a handful of trustworthy sellers, if not more.

Negative Ratings:

That’s also something we consider! Products that received mainly negative ratings are discarded from our top rated step drill bits cobalt steel list.


#1. Why choose this type of step drill bits cobalt steel?

Because step drill bits cobalt steel vary drastically in size, knowing what will fit comfortably on to use it. If you are in need of a step drill bits cobalt steel that provides high quality support. However, you may decide you don’t need one so high.

#2. How Much Should I Spend on a step drill bits cobalt steel?

Ideally, a step drill bits cobalt steel is going to live with you for years. Paying more for your product will reward you every time you fast open the lid with increased your speed, better quality accuracy and a sweet view. Again, the average cost of a new step drill bits cobalt steel is between $$ and $$$. Sure, you get out on some luxury features.

Final Word

We chose our best step drill bits cobalt steel based on these criteria. Is this all there is to it? Of course not! Our website is constantly updated to provide you with the most up-to-date and relevant information.

We have a final layer of filtering because we place reader satisfaction at the top of our list. Thank you for your support! We’d appreciate your feedback or correction if any step drill bits cobalt steel mentioned here is incorrect, out of date, outdated, irrelevant, or otherwise inappropriate. We welcome your comments and will make frequent corrections to our list based on your reasonable suggestions.

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