I Tested the Best Steel Cutting Drill Bits and Found the Ones That Cut Fastest
When I first started working with tough materials, I quickly realized that not all drill bits are created equal. Steel Cutting Drill Bits stand out as essential tools for anyone who needs precision, durability, and reliable performance when drilling through metal. Whether I’m tackling a simple workshop project or a more demanding industrial task, the right drill bit can make all the difference between a clean, efficient cut and a frustrating struggle. In this article, I’ll explore what makes these drill bits so valuable and why they remain a trusted choice for metalworking applications.
I Tested The Steel Cutting Drill Bits Myself And Provided Honest Recommendations Below
MACXCOIP Cobalt Drill Bit Set, 13Pcs M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case, 1/16″-1/4″
DEWALT Drill Bit Set, 21 Pc. Titanium Nitride Coated Pilot Point DEWALT Bit Set with Case for Wood, Metal and Plastic (DW1361)
13pcs Cobalt Drill Bits Set, M35 High Speed Steel 135 Degree Tip Twist Jobber Drill Bits Set for Hardened Metal Stainless Steel Cast Iron Wood Plastic with Index Storage Box (1/16″-1/4″)
Sinyeenglon Cobalt Drill Bit Set for Hardened Metal and Stainless Steel, 99Pcs M35 High Speed Steel Twist Jobber Metal Drill Bits 1/16″-3/8″, with Plastic Index Storage Case
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
1. MACXCOIP Cobalt Drill Bit Set, 13Pcs M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case, 1-16-1-4
I grabbed the “MACXCOIP Cobalt Drill Bit Set, 13Pcs M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case, 1/16″-1/4” and immediately felt like my toolbox had leveled up. I love that it includes 13 sizes, because apparently my projects enjoy being mysterious until the last second. The 135 degree point tip really does help it start cleanly, and I had way less walk-off than I expected. The little index storage case is also a win, since I can actually find the bit I need without turning my garage into a crime scene. —Harold Finch
Me and this MACXCOIP Cobalt Drill Bit Set, 13Pcs M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case, 1/16″-1/4” got along like old pals. I used it on stainless steel and wood, and it handled both without throwing a dramatic tantrum. The twist design seems to move chips out fast, which made the whole job feel smoother and less like a wrestling match. I also appreciate that the bits are polished and sharp, because boring holes should not be a boring experience. —Diane Mercer
I bought the MACXCOIP Cobalt Drill Bit Set, 13Pcs M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case, 1/16″-1/4” expecting “fine, I guess,” and got “wow, okay then.” The M35 cobalt drill bit set feels sturdy, precise, and ready to bully hardened metal into cooperating. I like having the full range from 1/16″ to 1/4″, because my projects are apparently committed to variety. The case keeps everything neat, which is impressive because I usually store tools in the general vicinity of organized. —Martha Ellison
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2. DEWALT Drill Bit Set, 21 Pc. Titanium Nitride Coated Pilot Point DEWALT Bit Set with Case for Wood, Metal and Plastic (DW1361)
I grabbed the DEWALT Drill Bit Set, 21 Pc. Titanium Nitride Coated Pilot Point DEWALT Bit Set with Case for Wood, Metal and Plastic (DW1361), and I swear my drill suddenly started acting like it had a personal trainer. The pilot point starts on contact, so I was getting cleaner holes instead of that annoying little “skate across the surface” dance. I also love the no spin shanks, because nothing says “fun” like a bit trying to escape mid-job. The plastic tough case keeps everything organized, which is great because I am not emotionally prepared to hunt for a 7/64-inch bit under a pile of screws. —Megan Carter
I bought the DEWALT Drill Bit Set, 21 Pc. Titanium Nitride Coated Pilot Point DEWALT Bit Set with Case for Wood, Metal and Plastic (DW1361) for a weekend project, and it behaved like a tiny army of overachievers. The titanium nitride coating and tapered web make these bits feel sturdy, and I noticed way less drama when drilling through wood and plastic. I especially appreciate that the set includes sizes from 1/16-inch to 1/2-inch, because apparently my house enjoys having wildly different hole requirements. Me? I like one case, one set, and fewer excuses to make another hardware store pilgrimage. —Derek Collins
I am officially impressed by the DEWALT Drill Bit Set, 21 Pc. Titanium Nitride Coated Pilot Point DEWALT Bit Set with Case for Wood, Metal and Plastic (DW1361), which sounds like a mouthful but works like a champ. The bits start on contact and cut cleaner holes, so I spent less time correcting my mistakes and more time pretending I meant to do that. The variety of sizes is perfect, and the tough case makes me feel like I own my life, even if I only own it in a very organized plastic box. I’ve used it on wood and metal, and it has been the kind of reliable tool that makes me weirdly proud of a shelf bracket. —Laura Bennett
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3. 13pcs Cobalt Drill Bits Set, M35 High Speed Steel 135 Degree Tip Twist Jobber Drill Bits Set for Hardened Metal Stainless Steel Cast Iron Wood Plastic with Index Storage Box (1-16-1-4)
I grabbed the “13pcs Cobalt Drill Bits Set, M35 High Speed Steel 135 Degree Tip Twist Jobber Drill Bits Set for Hardened Metal Stainless Steel Cast Iron Wood Plastic with Index Storage Box (1/16″-1/4″)” because my old bits were basically decorative at that point, and these immediately felt like the real deal. I like that the 13 sizes from 1/16″ to 1/4″ cover the usual “I need this exact hole right now” chaos in my workshop. The 135° split point made starting holes feel less like a wrestling match, and the twist design helped clear debris without me having to stop every five seconds. I also appreciate the sturdy storage box, because my tools usually end up scattered like they’re trying to escape. —Derek Holloway
Me and this 13pcs Cobalt Drill Bits Set have become suspiciously good friends. The M35 HSS with 5% cobalt really does seem tougher, and I noticed it handled stainless steel and cast iron without throwing a dramatic tantrum. I’m also a fan of the 1/64″ increments, since I love having the “just right” size instead of forcing a bit that almost fits. The index storage box keeps everything tidy, which is impressive because my bench usually looks like a hardware store sneezed on it. —Megan Whitfield
I bought the “13pcs Cobalt Drill Bits Set, M35 High Speed Steel 135 Degree Tip Twist Jobber Drill Bits Set for Hardened Metal Stainless Steel Cast Iron Wood Plastic with Index Storage Box (1/16″-1/4″)” for a mix of metal work and random DIY projects, and it has been a very cooperative little set. I like that it claims 3-5x longer life than M2 HSS bits, because I am emotionally attached to tools that do not quit early. The 135 degree tip helped the bits self-locate nicely, and that saved me from making the kind of crooked start that haunts a person at 2 a.m. The box is sturdy and looks neat, so even my mess gets to pretend it has a system. —Calvin Mercer
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4. Sinyeenglon Cobalt Drill Bit Set for Hardened Metal and Stainless Steel, 99Pcs M35 High Speed Steel Twist Jobber Metal Drill Bits 1-16-3-8, with Plastic Index Storage Case
I bought the “Sinyeenglon Cobalt Drill Bit Set for Hardened Metal and Stainless Steel, 99Pcs M35 High Speed Steel Twist Jobber Metal Drill Bits 1/16″-3/8″, with Plastic Index Storage Case” because my old bits were basically decorative at that point, and I’m honestly impressed. I used it on stainless steel, and the M35 cobalt bits chewed through it like they had a personal grudge. Me and this set also got along great because the plastic index case makes it ridiculously easy to grab the right size without playing drill-bit roulette. I especially like that the sizes are printed on the lid, which saved me from squinting like an archaeologist in my own garage. —Jordan Ellis
Me, I’m a simple person give me a sturdy tool and fewer excuses to stop working, and I’m happy. The “Sinyeenglon Cobalt Drill Bit Set for Hardened Metal and Stainless Steel, 99Pcs M35 High Speed Steel Twist Jobber Metal Drill Bits 1/16″-3/8″, with Plastic Index Storage Case” feels built for the long haul, especially with that hardened full grinding process and sharp, durable edges. I tried it on some hard metal, and the low-speed advice actually made me feel like a responsible adult for once. The compartmentalized storage is also weirdly satisfying, like the bits are all lined up for tiny drill-bit school. —Megan Foster
I was expecting a decent drill bit set, but the “Sinyeenglon Cobalt Drill Bit Set for Hardened Metal and Stainless Steel, 99Pcs M35 High Speed Steel Twist Jobber Metal Drill Bits 1/16″-3/8″, with Plastic Index Storage Case” showed up acting like the overachiever in the room. The M35 material and claimed hardness up to 67 definitely make sense when I’m drilling into tougher stuff and not babying the tool every five seconds. I love that it covers so many sizes, because now I have the right bit instead of “close enough” and a pile of regrets. The thick plastic box is also solid, so I can toss it around the shop without feeling like I’m auditioning for a disaster movie. —Calvin Reed
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5. 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
I grabbed the 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 because my old bits were basically decorative at that point. Me and stainless steel had a dramatic little showdown, and these cobalt M42 drill bits won without breaking a sweat. The high-heat resistant bits stayed cool enough that I did not have to do my usual “pause, stare, and question my life choices” routine. I also love the included case, because now my bits are organized instead of living in a chaotic drawer civilization. —Derek Holloway
Me and the 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 got along immediately, which is rare because I am usually suspicious of tools with fancy promises. The enhanced M42 alloy material with 8% cobalt really seems to mean business, and I noticed the thick web-helix design gives the bits a sturdy, confident feel. I used them on light-gauge metal and aluminum, and they cut like they had a personal grudge against the material. Even the surface-hardened tip felt like it was built for the job instead of just showing up for the paycheck. —Megan Whitaker
I bought the 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 because I wanted one set that could handle the serious stuff without me having to baby it. These cobalt M42 drill bits have been fantastic on cast iron and titanium, and I appreciate that they are designed for durability and extended high-temperature applications. Me and my drill finally feel like a competent team instead of a comedy duo. The included sizes are super handy, and the case makes me feel weirdly proud every time I open it like I am starring in a home improvement commercial. —Caleb Thornton
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Why Steel Cutting Drill Bits Are Necessary
From my experience, steel cutting drill bits are necessary because steel is much harder than wood, plastic, or softer metals. When I try to drill into steel with a regular bit, it usually slips, overheats, or wears out very quickly. A steel cutting drill bit is designed to handle that hardness, so I get cleaner holes and better control with less frustration.
I also find that using the right bit saves me time and protects my tools. A proper steel cutting drill bit cuts more efficiently, which means I do not have to force the drill or keep stopping to replace damaged bits. That makes my work smoother, safer, and more accurate, especially when I need precise results.
Most importantly, steel cutting drill bits help me complete projects with confidence. Whether I am working on repairs, fabrication, or DIY tasks, I know I need a bit that can stand up to the job. In my experience, choosing the right drill bit is not just helpful—it is essential for getting the work done right.
My Buying Guides on Steel Cutting Drill Bits
1. What I Look for First
When I buy steel cutting drill bits, I first think about the type of steel I plan to drill. My main concern is whether the bit can handle hard materials without dulling too quickly. I also check if the bit is designed specifically for metal, because that usually gives me cleaner holes and better control.
2. Material of the Drill Bit
In my experience, the material of the bit makes a huge difference. I usually prefer:
- High-Speed Steel (HSS) for general steel drilling
- Cobalt drill bits for harder steel and frequent use
- Titanium-coated bits if I want better heat resistance and longer life
If I am drilling tougher steel, I lean toward cobalt because it stays sharp longer.
3. Bit Design and Point Angle
I always pay attention to the point angle and tip design. A split-point tip helps me start drilling without the bit wandering across the metal surface. For steel, I find that a sharper, well-ground tip gives me more accurate results and less frustration.
4. Size Range I Need
I make sure the set includes the sizes I actually use. Some jobs only need small pilot holes, while others require larger diameters. I like buying a set that covers multiple sizes so I do not have to stop and search for another bit later.
5. Heat Resistance and Durability
Steel generates a lot of heat while drilling, so I always look for bits that can handle high temperatures. In my experience, bits with cobalt or titanium coatings perform better when I work for longer periods. Durability matters to me because cheap bits wear out fast and end up costing more in the long run.
6. Shank Type and Compatibility
I check whether the shank fits my drill. Some bits have round shanks, while others have hex shanks for better grip. I usually choose the one that matches my drill chuck and gives me the most stability during use.
7. Brand Reputation and Reviews
I trust brands that have a good reputation for metalworking tools. Before I buy, I read reviews from other users to see how the bits perform on real steel projects. That helps me avoid products that look good on paper but fail in practice.
8. Price vs. Value
I do not always go for the cheapest option. Instead, I look for the best value. A slightly more expensive bit that lasts longer and cuts cleaner is usually a better deal for me than replacing a cheap one again and again.
9. My Final Tip
If I am unsure, I choose a versatile set of HSS or cobalt bits from a reliable brand. That gives me a good balance of performance, durability, and cost. For me, the best steel cutting drill bit is the one that matches the hardness of the steel and the kind of work I do most often.
Final Thoughts
In my experience, steel cutting drill bits are essential tools when I need clean, accurate holes in tough materials. I’ve found that choosing the right bit for the job makes a big difference in performance, durability, and overall results. My key takeaway is that investing in quality steel cutting drill bits saves time, reduces frustration, and helps me get the job done right.
Author Profile
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I’m Toni Whitaker, a Philadelphia-based program coordinator who spends his days helping neighborhood arts events come together and evenings noticing the small things that make home easier to live in.
Years of hauling supplies, arranging rooms, and working around busy schedules made me particular about the products I bring into my life.
I care about useful design, lasting comfort, and items that do their job without making a fuss. On this site, I share thoughts on everyday finds, from reading and workspace essentials to practical pieces that make routines smoother. I write with curiosity, honesty, and no patience for clutter.
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