10 Best Step Drill Bits Cobalt Steel Recommended By An Expert

10 Best Step Drill Bits Cobalt Steel Recommended By An Expert

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Top 10 step drill bits cobalt steel Review for 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 :

Choosing The Best step drill bits cobalt steel

Are you stressed out by finding the perfect step drill bits cobalt steel? When considering the purchase of step drill bits cobalt steel in general, have you ever felt uncertain about what model to select?

You don’t have to worry about being alone sometimes; just knowing that you aren’t. The perfect step drill bits cobalt steel can be hard to find for many people. That is why we’re here to assist!

This page is obviously regarding Cheap step drill bits cobalt steel Reviews which is why you’ve come here. Before committing, locate a source with a variety of options to make an informed decision.

Obtaining information can be done in several ways – using online buying guides, independent product reviews you find across the internet, word-of-mouth recommendations, forums where users share their experiences, and even YouTube channels. It is only through thorough research that one can come across the best products.

Correct? Does it always seem too hard to accomplish that? For that reason, we have gathered a list of the top step drill bits cobalt steel products on the market, for your convenience.

Our list was compiled based on what led us to do so? How did we come up with this guide?

We first gathered product information from reliable sources using the algorithms we had created.

Various methods for verification of collected data were used, including artificial intelligence and big data sets.

By utilizing industry-standard criteria, we assessed them using our artificial intelligence to find the top step drill bits cobalt steel on the market!

Our products aren’t chosen randomly. We take several factors into consideration before putting together a list. Among them are:

Value of the brand:

Why would you purchase a cheap brand that is unable to meet your expectations? There is a higher chance it won’t be reliable. A renowned brand focuses more on preserving its reputation than any other.

The great step drill bits cobalt steel brands are distinguished from the competition by their unique features. We hope that one of our products meets your requirements, therefore.


It’s not necessary to have hundreds of features. The features that really matter are considered when choosing the top step drill bits cobalt steel.


When you have numbers at your disposal, you can always make quantitative measurements of quality. Our company aims for products which provide greater value than the standard, but with a good balance between step drill bits cobalt steel.

Customer Reviews:

You won’t be held responsible for things that have gone wrong with previous customers, will you? If you have higher ratings, a large number of people will be satisfied with your service.

The Following are Customer Reviews:

Reviewing customer reviews provides you with truthful and unbiased information about step drill bits cobalt steel, which has come from people who have actually used it.

Ranking of Sellers:

Don’t you think that’s fascinating? To be successful you need to offer a popular, growing product, not just a good step drill bits cobalt steel. They go hand in hand.

The growth of the product’s user base confirms that it is successful. Having a growing number of customers should improve after-sales service and quality for manufacturers.

Money Well Spent:

You get what you pay for, according to an old saying. You cannot get the top for the least money. Thus, it is also not necessary to spend a great deal of money on something that has no real value. You have to evaluate the value you’re getting from your step drill bits cobalt steel before considering it.


There is a close relationship between reliability and durability. You can use step drill bits cobalt steel for many months since it’s robust and durable.


New products are introduced every now and then to replace old ones. This product has likely been modified and may have some new features.

Does the manufacturer no longer support supposedly good products like step drill bits cobalt steel? Our goal is to showcase products from a select few, if not more, trustworthy sellers.

Ratings Below Zero:

We consider that as well! Our top rated step drill bits cobalt steel list excludes products that received mostly negative reviews.

 Frequently Asked Questions:

#1. What are the benefits of this type of step drill bits cobalt steel?

The size of step drill bits cobalt steel is drastically different, so it needs to be known what fits comfortably on. If you’re looking for a company that can provide quality support. If you decide not to use one, you will not be penalized.

#2. What is the best price for a [REPLACE_KEYWORD]?

A step drill bits cobalt steel is supposed to be a lifelong companion. You will enjoy faster opening times, better quality, and a better view by paying more for your product. It would cost between $$$ and $$$ for a new step drill bits cobalt steel. The only downside is that you wouldn’t have some luxury features.

A Word of Finality

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.

As part of our goal to provide the best experience to our readers, we have added a final layer of filtering. Please support us! Please let me know if you have any comments, corrections, or clarifications regarding the step drill bits cobalt steel information provided above. We would appreciate your input. Your reasonable suggestions will be taken into consideration as we make corrections to our list.

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