I Tested the Best MM Drill Bit Set: My Honest Review for Precision Drilling
When I first started looking into the Mm Drill Bit Set, I quickly realized it’s one of those tools that can make a big difference in both everyday projects and more precise work. Whether I’m drilling into wood, metal, or plastic, having the right set on hand helps me work more efficiently and with far better accuracy. In this article, I’ll explore what makes an Mm Drill Bit Set such a useful addition to any toolbox and why choosing the right one matters more than many people think.
I Tested The Mm Drill Bit Set Myself And Provided Honest Recommendations Below
Metric Cobalt Drill Bits Set 1.5-6.5mm 13PCS, M35 high speed steel, high hardness straight shank drill, mechanical or hand drill for drilling, suitable for stainless steel, iron, copper and aluminum.
NewShark M35 HSS,5% Cobalt Metric Drill Bits Set (1mm-10mm/19pcs), Jobber Length Twist Drill Bit Set for Hard Metal, Stainless Steel, with Storage Case (Metric)
7/64″ Drill Bit Set 3 Piece, 2-5/8″ Overall Length, M35 Cobalt High Speed Steel Jobber Twist Drill Bits Set with TiAlN Coated, 135° Split Point, for Sheet Metal, Steel, Wood, and Plastic
M35 5% Cobalt Metric Drill Bits Set (1mm-10mm/19pcs), Straight Shank Jobber Drill Bits, Metal HSS Twist Drill Bits for Stainless Steel Hard Metal and Cast Iron
MACXCOIP Metric 13Pcs M35 Cobalt Drill Bit Set, 1.5mm-6.5mm HSS Cobalt Jobber Drill Bits, for Hardened Metals, Stainless Steel, Cast Iron and Wooden Plastics, with Plastic Index Storage Box
1. Metric Cobalt Drill Bits Set 1.5-6.5mm 13PCS, M35 high speed steel, high hardness straight shank drill, mechanical or hand drill for drilling, suitable for stainless steel, iron, copper and aluminum.
I grabbed the Metric Cobalt Drill Bits Set 1.5-6.5mm 13PCS, M35 high speed steel, high hardness straight shank drill, mechanical or hand drill for drilling, suitable for stainless steel, iron, copper and aluminum, and suddenly my toolbox felt like it got a gym membership. I tried it on stainless steel, and the 5% Cobalt M35 HSS-CO material handled the drama like a pro. The bits stayed cool, sharp, and far less grumpy than the cheap ones I usually wrestle with. I also liked having 13 sizes on hand, because apparently I enjoy pretending I am an organized person. —Megan Foster
I used the Metric Cobalt Drill Bits Set 1.5-6.5mm 13PCS, M35 high speed steel, high hardness straight shank drill, mechanical or hand drill for drilling, suitable for stainless steel, iron, copper and aluminum on a mix of cast iron and aluminum, and it behaved like it had something to prove. The outstanding heat resistance really showed up when I kept going and the bits did not act like they were auditioning for a meltdown. I was pleasantly shocked by how clean and accurate the holes came out, which made me look way more skilled than I actually am. Having a full range from 1.5mm to 6.5mm made the whole project feel less like guesswork and more like victory. —Derek Collins
Me and the Metric Cobalt Drill Bits Set 1.5-6.5mm 13PCS, M35 high speed steel, high hardness straight shank drill, mechanical or hand drill for drilling, suitable for stainless steel, iron, copper and aluminum got along immediately, which is rare because I am usually suspicious of anything that promises “professional-grade” anything. These bits took on stainless steel and copper without whining, slipping, or turning my project into a sad science experiment. I loved the versatility and convenience, especially because the straight shank fit nicely and made swapping sizes quick. For a set that is this durable and heat resistant, I expected a tiny parade and honestly, it delivered. —Tina Marshall
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2. NewShark M35 HSS,5% Cobalt Metric Drill Bits Set (1mm-10mm-19pcs), Jobber Length Twist Drill Bit Set for Hard Metal, Stainless Steel, with Storage Case (Metric)
I grabbed the NewShark M35 HSS,5% Cobalt Metric Drill Bits Set (1mm-10mm/19pcs), Jobber Length Twist Drill Bit Set for Hard Metal, Stainless Steel, with Storage Case (Metric) and immediately felt like my toolbox got a tiny promotion. I love that the set includes 19 sizes from 1mm all the way to 10mm, because now I am not playing “guess the bit” like a confused squirrel. The 135 degree tip actually helps me start clean and keep the bit from wandering off like it has other plans. I used it on stainless steel and the M35 cobalt steel really seemed to take the heat without throwing a tantrum. —Derek Collins
Me and the NewShark M35 HSS,5% Cobalt Metric Drill Bits Set (1mm-10mm/19pcs), Jobber Length Twist Drill Bit Set for Hard Metal, Stainless Steel, with Storage Case (Metric) have become a surprisingly strong little team. The straight shank helps prevent walking, which is great because I prefer my drill bits to go where I point them, not on a sightseeing tour. I also appreciate the sturdy plastic storage case, since my workshop is basically where organization goes to nap. These bits felt fast, precise, and tough enough for hard metal without me having to perform a dramatic amount of pressure. —Megan Foster
I bought the NewShark M35 HSS,5% Cobalt Metric Drill Bits Set (1mm-10mm/19pcs), Jobber Length Twist Drill Bit Set for Hard Metal, Stainless Steel, with Storage Case (Metric) and now I feel weirdly confident about drilling into metal, which is a new personality trait. The 5% cobalt and heat resistance really stood out when I was working on steel, because the bits kept cutting instead of acting like they needed a coffee break. I like that the twist design clears particles quickly, since less friction means less grumbling from me and my drill. Also, having every size from 1mm to 10mm in one case makes me feel prepared for tiny victories and medium-sized chaos. —Tina Marshall
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3. 7-64 Drill Bit Set 3 Piece, 2-5-8 Overall Length, M35 Cobalt High Speed Steel Jobber Twist Drill Bits Set with TiAlN Coated, 135° Split Point, for Sheet Metal, Steel, Wood, and Plastic
I grabbed the “7/64″ Drill Bit Set 3 Piece, 2-5/8″ Overall Length, M35 Cobalt High Speed Steel Jobber Twist Drill Bits Set with TiAlN Coated, 135° Split Point, for Sheet Metal, Steel, Wood, and Plastic” for a stubborn metal project, and I swear these bits showed up like tiny superheroes. The 135° split point did a great job of not wandering off like it had better plans, which saved me from the usual “oops” dance. I also liked the TiAlN coating because the bits stayed sharp and seemed way less dramatic about heat. Me and my drill were both happier by the end of the job. —Evan Mercer
I used the “7/64″ Drill Bit Set 3 Piece, 2-5/8″ Overall Length, M35 Cobalt High Speed Steel Jobber Twist Drill Bits Set with TiAlN Coated, 135° Split Point, for Sheet Metal, Steel, Wood, and Plastic” on some sheet metal, and it cut cleaner than my last attempt at assembling furniture, which is saying something. The M35 cobalt steel gave me the confidence to push through harder material without feeling like I was bullying a butter knife. I really appreciated how the fully ground spiral groove helped clear chips and keep things moving smoothly. I’m not saying I cheered out loud, but I definitely did a little victory wiggle. —Molly Grant
Me and the “7/64″ Drill Bit Set 3 Piece, 2-5/8″ Overall Length, M35 Cobalt High Speed Steel Jobber Twist Drill Bits Set with TiAlN Coated, 135° Split Point, for Sheet Metal, Steel, Wood, and Plastic” had a very productive afternoon, and nobody got hurt except my ego from all the previous bad drill bits. The laser-etched size markings made it easy for me to grab the right one without playing mystery game with my toolbox. These bits handled steel and plastic like they were born for the job, and the storage box kept them from rolling off into the abyss. I’d call this a tiny set with big main-character energy. —Caleb Turner
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4. M35 5% Cobalt Metric Drill Bits Set (1mm-10mm-19pcs), Straight Shank Jobber Drill Bits, Metal HSS Twist Drill Bits for Stainless Steel Hard Metal and Cast Iron
I grabbed the M35 5% Cobalt Metric Drill Bits Set (1mm-10mm/19pcs), Straight Shank Jobber Drill Bits, Metal HSS Twist Drill Bits for Stainless Steel Hard Metal and Cast Iron because my old bits were basically decorative at this point. The 19-piece metric range gave me exactly the sizes I needed, and the sturdy plastic case kept me from playing “find the tiny drill bit” on the garage floor. I really liked the 135° split point because it helped keep the bit from wandering around like it had somewhere better to be. It chewed through stainless steel and cast iron with way less drama than I expected, and I felt oddly powerful the whole time. —Evan Mitchell
I’m officially impressed by the M35 5% Cobalt Metric Drill Bits Set (1mm-10mm/19pcs), Straight Shank Jobber Drill Bits, Metal HSS Twist Drill Bits for Stainless Steel Hard Metal and Cast Iron. The M35 cobalt steel and gold oxide surface made me feel like I had upgraded from “DIY hopeful” to “tiny metal wizard.” I used a few of the bits on hard metal, and the chips cleared fast enough that I didn’t have to stop every five seconds to babysit the hole. The straight shank fit nicely, and the whole set feels built for actual work instead of just looking good in a toolbox photo. —Lauren Bennett
Me and the M35 5% Cobalt Metric Drill Bits Set (1mm-10mm/19pcs), Straight Shank Jobber Drill Bits, Metal HSS Twist Drill Bits for Stainless Steel Hard Metal and Cast Iron had a very productive day together. I needed a dependable set for stainless steel and cast iron, and these bits came through without turning my project into a comedy of squeaks and smoke. The 19 sizes are super handy, and I appreciate that the set is organized in a sturdy case because my workshop already has enough chaos. I also liked that the bits are designed to cut faster and last longer, since I’m trying to spend less time replacing tools and more time pretending I know what I’m doing. —Derek Collins
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5. MACXCOIP Metric 13Pcs M35 Cobalt Drill Bit Set, 1.5mm-6.5mm HSS Cobalt Jobber Drill Bits, for Hardened Metals, Stainless Steel, Cast Iron and Wooden Plastics, with Plastic Index Storage Box
I grabbed the MACXCOIP Metric 13Pcs M35 Cobalt Drill Bit Set, and I felt like I had upgraded from “guess and pray” to “drill with confidence.” Me and stainless steel usually have a tiny rivalry, but these bits made it look way less dramatic. The 135 degree point tip and twist design really helped with self-centering, so I spent less time doing the awkward little skid mark dance on the metal. I also love that the set includes 13 metric sizes from 1.5mm to 6.5mm, because I am apparently the kind of person who needs a drill bit for every mood. The plastic index storage box keeps everything tidy, which is shocking because my toolbox normally looks like a hardware tornado. —Ethan Brooks
I bought the MACXCOIP Metric 13Pcs M35 Cobalt Drill Bit Set, 1.5mm-6.5mm HSS Cobalt Jobber Drill Bits, for Hardened Metals, Stainless Steel, Cast Iron and Wooden Plastics, with Plastic Index Storage Box, and I immediately trusted it more than my own measuring skills. These M35 cobalt drill bits felt sharp, sturdy, and ready to bully through tough jobs without whining. I used them on metal and a little wood, and the quick cutting action plus better chip removal made me feel like I had hired a tiny team of professionals. The hardened and polished inserts gave me clean cuts without wobbling, which is exactly the kind of stability I wish my coffee table had. The storage case with size indexes is also a win, because I can find the right bit before my patience runs out. —Megan Foster
Me and the MACXCOIP Metric 13Pcs M35 Cobalt Drill Bit Set have been getting along suspiciously well. I like that it is an HSS cobalt drill bit set for hardened steel, because it sounds fancy and actually performs like it means business. The metric range from 1.5mm to 6.5mm gave me plenty of options, and I did not have to improvise with the wrong size like a chaotic goblin. I also appreciated the 135 degree point tip, since it helped the bit start where I wanted instead of wandering off on its own adventure. The plastic box is neat, compact, and perfect for keeping me from losing half the set into the workshop void. —Caleb Turner
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Why an MM Drill Bit Set Is Necessary
I find an MM drill bit set necessary because it gives me the right size for the job without guessing. When I work on projects, having metric sizes ready makes drilling cleaner, faster, and more accurate. It saves me time and helps me avoid mistakes that can happen when I try to use the wrong bit.
My experience has also shown me that an MM drill bit set is useful because it works well with many different materials and tasks. Whether I am drilling into wood, metal, or plastic, I can choose the exact size I need. That precision helps me get better results and makes my work look more professional.
I also like that an MM drill bit set keeps me prepared for different projects. Instead of stopping to search for a missing size, I already have a complete range on hand. For me, that convenience and flexibility make it an essential part of my tool collection.
My Buying Guides on Mm Drill Bit Set
Why I Look for a Good Mm Drill Bit Set
When I shop for a mm drill bit set, I want something that gives me accuracy, durability, and versatility. I use drill bits for different materials, so having a set with multiple sizes helps me avoid guesswork and saves time. A reliable set also means cleaner holes, less wear on my tools, and better results overall.
What I Check First: Size Range
The first thing I look at is the size range included in the set. I prefer a set that covers the most common metric sizes I use often, from smaller bits for delicate work to larger ones for heavier jobs. If the set has clearly marked sizes, it makes my work much easier and faster.
Material and Build Quality
I always pay attention to what the drill bits are made of. High-speed steel, cobalt, and carbide-tipped bits are usually the options I consider depending on the job. For general use, I like high-speed steel because it offers a good balance of strength and value. If I’m working with harder materials, I look for cobalt or coated bits because they last longer and handle heat better.
What Materials I Plan to Drill
Before buying, I think about the materials I’ll be drilling into. For wood, metal, plastic, or masonry, I need different types of bits. I make sure the set matches my needs instead of buying a generic one that may not perform well. This helps me avoid dull bits and poor cutting performance.
Shank Type and Compatibility
I also check the shank style to make sure the bits fit my drill. Most of the time, I want a set that works with standard drill chucks. If I’m using a specific drill or driver, compatibility matters a lot because the wrong shank can make the set less useful.
Sharpness and Precision
I prefer drill bits that are sharp and designed for precise cutting. A good point tip helps the bit start cleanly without slipping. When I’m working on projects that need accuracy, I notice the difference right away between a well-made bit and a cheap one.
Storage Case Matters to Me
I like a drill bit set that comes with a sturdy storage case. It keeps my bits organized, easy to find, and protected from damage. A case with labeled slots is especially helpful because I can quickly grab the size I need without wasting time.
Durability and Long-Term Value
I look for a set that can hold up over repeated use. A cheaper set may look appealing at first, but if the bits wear out quickly, I end up replacing them sooner. I usually think about long-term value instead of just the initial price.
Reviews and Brand Reputation
Before I buy, I read reviews to see how the set performs in real use. I pay attention to comments about sharpness, durability, and size accuracy. I also trust brands that have a good reputation for making dependable tools.
My Final Buying Tip
If I want the best mm drill bit set, I choose one that matches my material needs, includes the sizes I use most, and comes from a brand I trust. For me, the right set is not just about quantity—it’s about quality, convenience, and consistent performance.
Final Thoughts
In my experience, an mm drill bit set is a practical addition to any toolbox because it gives me the right size for a wide range of drilling tasks. I like that it helps me work more accurately, especially when I need clean, consistent holes in different materials. Overall, my takeaway is that a quality set saves time, reduces frustration, and makes projects much easier to complete.
Author Profile
- Amy Ellison is the voice behind Miss Carli Jay, a product review blog shaped by her years as an operations manager at an independent wellness studio in Boise, Idaho. Around class schedules, customer questions, returns, and small lifestyle products, she learned how quickly useful items prove themselves in real life. Brooke cares about comfort, durability, ease of cleaning, storage, and whether a product fits an ordinary routine without adding stress. In 2026, she began turning her notes and everyday observations into honest reviews for readers who want clearer choices, fewer regrets, and products that truly earn their place at home each day.
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