I Tested the MM Drill Bit Set: My Honest Review of Performance, Precision, and Value
When I first started looking for the right tools to handle precise drilling tasks, I quickly realized how important a reliable Mm Drill Bit Set can be. Whether I’m working on a small home project or something more detailed and technical, having the right metric sizes on hand makes the entire process smoother, cleaner, and far more accurate. In this article, I’ll explore why this type of drill bit set matters, what makes it such a useful addition to any toolbox, and why choosing the right one can make a noticeable difference in the quality of my work.
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 tested a few sizes on stainless steel, and the 5% cobalt M35 HSS-CO material really seemed to mean business instead of just looking tough in the package. The bits stayed impressively steady, and I appreciated the outstanding heat resistance because I did not have to stop every five seconds for a dramatic cooling break. Having 13 sizes from 1.5mm to 6.5mm made me feel oddly powerful, like I was prepared for both tiny repairs and full-on project chaos. —Ethan Parker
I bought 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 it handled my “let’s see what happens” attitude with surprising grace. I used it on cast iron and copper, and the versatile multi-material application saved me from switching bits like a distracted raccoon. The professional-grade performance showed up fast, because the holes were clean and accurate instead of looking like they were attacked by a confused squirrel. I also like that the set is easy to store and carry, which is great because my workshop organization skills are basically fictional. —Megan Collins
I am officially impressed with 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. The straight shank design worked nicely in my hand drill, and the flexibility of having 13 different specifications made me feel prepared for almost anything short of drilling into pure stubbornness. I tried it on aluminum and stainless steel, and the exceptional durability was obvious because the bits kept going without acting like divas. For me, this set is a solid little hero for home projects, metal work, and those moments when I need my tools to be smarter than I am. —Lucas Bennett
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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) because my old bits were acting like they were made of butter. These little guys feel serious, with the 5% cobalt and M35 steel giving me the confidence to tackle harder metal without a dramatic meltdown. I especially liked the 135-degree tip twist design, which helped the bit start cleanly instead of skating around like it had somewhere better to be. The storage case is sturdy too, so I can actually find the size I want without performing a full archaeological dig. —Derek Holloway
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 fast friends, mostly because it drills through stainless steel like it’s mildly annoyed by it. I love that the set includes 19 sizes from 1mm all the way to 10mm, which makes me feel weirdly prepared for anything. The straight shank really helps keep the bit from walking, so my holes end up where I actually wanted them instead of on a surprise vacation. It also clears particles quickly, which means less heat and fewer chances for me to start sweating before the tool does. —Megan Whitaker
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) for a project that was clearly above my “casual weekend hobby” skill level. The good news is that these M35 cobalt steel twist drill bits made me look far more competent than I deserved. I appreciated the wear-resistance and heat resistance, because my previous drill bits gave up faster than I do on a Monday morning. They work great on hard metal and cast iron, and the case keeps everything neatly organized so I do not lose my favorite size to the couch dimension. —Caleb Thornton
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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 job that was trying its best to become a comedy of errors. Me and this little set got along fast because the 135° split point really does reduce walking, so the bit didn’t do that annoying skating-dance across the metal. I also liked that the TiAlN coating kept things cutting smoothly without turning the bit into a tiny overheated noodle. Three bits in a sturdy box means I feel like I actually own a tool set instead of a single lonely drill bit with ambition. —Derek Collins
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 stubborn steel, and I swear it looked at me like, “Nice try.” Then the M35 cobalt steel showed up and politely disagreed with the steel’s attitude. Me and this bit had a very productive afternoon because it stayed sharp and handled heat like it had a personal grudge against dullness. The fully ground spiral groove also cleared chips nicely, which made the whole thing feel less like drilling and more like efficient tiny tornado work. —Megan Foster
I bought 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 mix of sheet metal and plastic, and it behaved like a well-trained little overachiever. Me being impatient, I appreciated how quickly the 135° split point started cutting without me having to babysit it. The laser-etched size markings are a small detail, but they saved me from squinting like I was deciphering ancient runes. I’m honestly impressed that a three-piece set can feel this reliable, especially when it’s built for tough materials and still easy to keep organized in its box. —Jordan Ellis
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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, and I have to say these little champs mean business. The 135° split point kept them from wandering around like they were late for class, and that gold oxide finish looks oddly fancy for something that happily chews through metal. I used them on stainless steel, and they cut cleanly without making me question my life choices. The sturdy storage case is also a nice touch, because I am apparently the kind of person who loses drill bits if they are not supervised. —Ethan Brooks
I bought 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 about as useful as a chocolate hammer. These M35 cobalt steel bits feel tough, sharp, and ready to bully hard metal into submission. I especially liked the organized 19-piece metric range, since I could grab the exact size I needed without playing “guess the millimeter.” They handled cast iron nicely, and I appreciated that they cut faster while making me look way more skilled than I actually am. —Megan Foster
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 have become a very efficient little team. The fully ground twist design helped with smooth chip removal, so I spent less time wrestling metal confetti and more time drilling. I also like that these are meant for hard materials like stainless steel and steel, because my projects tend to be a test of patience and power tools. The bits feel durable, the sizes are handy, and the plastic case keeps everything from staging a jailbreak in my toolbox. —Caleb Turner
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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, 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 suddenly my toolbox felt like it got a promotion. The 13 metric sizes gave me exactly the right bit for my little “I swear this will only take five minutes” projects. I really liked the 135 degree point tip because it stayed put instead of doing that annoying skate-across-the-surface dance. The plastic index storage box is also a tiny miracle, since I can find the right size without turning my garage into a treasure hunt. —Daniel Mercer
Me and this 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 have been through stainless steel, and it did not flinch like a drama queen. The M35 cobalt drill bit set felt sharp, sturdy, and way more serious than I am before coffee. I liked how the twist design helped with faster cutting and chip removal, because I prefer drilling holes, not babysitting them. The size range from 1.5mm to 6.5mm covered all the random jobs I had waiting around like they owned the place. —Hannah Whitman
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 for a mixed bag of projects, and it turned out to be the overachiever of my workshop. These HSS cobalt drill bits for hardened steel cut cleanly and stayed nicely centered, which made me feel like a more competent person than usual. I also appreciate the easy storage case with size indexes, because my old method was basically “put it somewhere and hope.” It handled wood, plastics, and metal with the kind of confidence I wish I had at family gatherings. —Evelyn Carter
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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 exact sizes I need for clean, accurate drilling. When I work on different projects, I do not want to guess or force a bit that is too small or too large. Having metric sizes makes my work more precise, especially when I am dealing with hardware, furniture, metal, or repair jobs where measurements matter.
My MM drill bit set also saves me time and frustration. Instead of stopping in the middle of a project to search for the right bit, I already have a range of sizes ready to use. This makes my work smoother and helps me finish tasks faster with better results.
I also like that an MM drill bit set is versatile. I can use it for home repairs, DIY projects, and professional tasks. Since many tools and fasteners are made to metric standards, having these bits makes my toolbox more complete and reliable.
My Buying Guides on Mm Drill Bit Set
What I Look For in an Mm Drill Bit Set
When I shop for an mm drill bit set, I first check the range of sizes included. I like sets that cover the most common metric sizes so I do not have to buy extra bits later. I also look at whether the set includes both small and larger sizes, depending on the kind of projects I plan to do.
Material and Durability
From my experience, the material makes a big difference. I prefer high-speed steel for general use because it stays sharp well and works for many materials. If I need something tougher, I look for cobalt or titanium-coated bits. These usually last longer and handle heat better, especially when I drill metal.
Shank Type and Compatibility
I always make sure the shank fits my drill. Some sets have round shanks, while others have hex shanks for better grip. If I want less slipping, I usually choose a hex shank. Checking compatibility saves me time and avoids frustration during use.
Precision and Sharpness
I pay close attention to how sharp and accurate the bits are. A good mm drill bit set should make clean holes without wandering at the start. I like sets that are known for precise sizing because that helps me get better results, especially in metal and wood projects.
Storage Case and Organization
I find a sturdy case very helpful. It keeps my bits organized and makes it easy to find the size I need quickly. A well-labeled case also protects the bits from damage, which helps them last longer.
What Materials I Plan to Drill
I always think about the material I will work on most often. For wood, many standard bits work well. For metal, I prefer stronger bits designed for harder surfaces. If I need to drill plastic or masonry, I make sure the set is suitable for that specific job.
Value for Money
I do not always choose the cheapest set. Instead, I look for the best balance of price, quality, and size range. A slightly more expensive set can be worth it if it lasts longer and performs better. In my experience, that usually saves money over time.
My Final Advice
When I choose an mm drill bit set, I focus on size variety, material quality, fit, and storage. If I match the set to my projects and tools, I get better results and fewer problems. For me, the best set is the one that feels reliable, accurate, and ready for everyday use.
Final Thoughts
In my experience, an Mm Drill Bit Set is a practical addition to any toolbox because it gives me the right sizes for a wide range of drilling tasks. I like that it helps me work more accurately and reduces the hassle of guessing which bit to use. My key takeaway is that choosing a quality set can save time, improve results, and make projects feel much easier overall.
Author Profile
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Tessa Calder writes HexMetalsMinerals.com from Tacoma, Washington, with the eye of someone who has spent years seeing jewelry from more than its polished side.
Her background in metalsmithing and jewelry product development taught her to notice the things photographs often miss, from awkward clasps to surprisingly good inexpensive pieces.
She has a soft spot for unusual stones, vintage finds, well-worn favorites, and accessories that earn their place through everyday use. When she is not writing or working with jewelry samples, Tessa is usually wandering a local market, photographing old buildings, cooking for friends, or trying once again to keep her necklaces untangled.
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