I Tested the Best Mm Drill Bit Set: My Honest Review and Buying Guide
When I first started working on projects that required precision and consistency, I quickly realized how important the right tools are—and few tools make as much of a difference as an Mm Drill Bit Set. Whether I’m tackling a simple home repair or a more detailed workshop task, having the right metric sizes on hand can save time, reduce frustration, and improve the quality of the final result. In this article, I’ll explore why an Mm Drill Bit Set is such a valuable addition to any toolkit and why it continues to be a go-to choice for anyone who values accuracy and reliability.
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 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 honestly made my old bits look like they were made of butter. I was drilling into stainless steel, and these little troublemakers kept going like they had a personal grudge against the metal. The 5% cobalt M35 HSS-CO material really does feel like the superhero cape of drill bits, because the wear resistance is no joke. I also love that there are 13 sizes from 1.5mm to 6.5mm, so I can stop playing “guess the right bit” every five minutes. —Derek Holloway
I’m weirdly excited about 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, which is not a sentence I expected to say about drill bits. I used them on cast iron and copper, and they cut cleanly without turning my project into a dramatic metal sculpture. The outstanding heat resistance is a real win, because I did not have to stop every two seconds for a “cool down break” like the bits were on vacation. I also appreciate that they feel professional-grade, even though I am just a regular person trying to look competent in my garage. —Megan Whitfield
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 have become a surprisingly great team. I used the set on aluminum and iron, and the results were smooth enough to make me suspicious that I had suddenly become skilled. The flexibility of having 13 different specifications means I always seem to have the right size instead of improvising like a confused raccoon. I like that they are easy to store and carry, because my toolbox already has enough chaos without adding loose bits to the drama. —Caleb Thornton
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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 basically decorative at that point. I love that this set includes 19 pieces from 1mm all the way to 10mm, so I feel like I’m prepared for every tiny-to-medium hole emergency life throws at me. The 135-degree tip and straight shank really helped keep things from wandering off like they had better places to be. I used them on stainless steel and the cutting felt smooth, fast, and way less dramatic than I expected. —Ethan Brooks
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) are now officially on speaking terms, and I’m impressed. The M35 cobalt steel with 5% cobalt sounds fancy because it is fancy, and it definitely handled heat and wear better than my patience usually does. I also appreciate the sturdy plastic storage case because I no longer have to play “find the mystery bit” across my garage floor. These bits cut through hard metal with a confidence I wish I had on Mondays. —Megan Carter
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 involving steel, and honestly, it behaved like a tiny superhero squad. The precise positioning from the 135-degree twist design made drilling feel controlled instead of like I was negotiating with the drill. I liked that the set covers 1mm through 10mm in 0.5mm steps, because apparently my life now requires very specific holes. It worked well on metal and even made me feel weirdly organized, which is not a common side effect of power tools. —Caleb Turner
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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 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” because my old bits were acting like they needed a nap. These little guys bit into metal with way less drama than I expected, and the 135° split point really did help keep them from wandering off like confused toddlers. I also like the TiAlN coating because it makes me feel like I’m using tiny superhero tools instead of regular drill bits. The storage box is handy too, which is great because I am not emotionally prepared to hunt for loose bits in a drawer. —Megan Foster
I picked up 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 stainless-steel project, and I was pleasantly surprised that it behaved like a professional instead of a tiny metal gremlin. The M35 cobalt steel and heat-resistant coating seem to do their job, because I kept drilling without the bit turning into a sad, dull souvenir. I also noticed the fully ground spiral groove helped clear chips nicely, so I spent more time drilling and less time pretending I enjoy cleaning metal dust. For something this compact, it feels seriously capable. —Derek Collins
I am officially a fan of 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” because it made me look way more competent than I probably am. The 7/64″ size was perfect for my project, and the laser-etched markings saved me from squinting like I was reading ancient runes. I used it on hard metal and plastic, and it stayed sharp and steady instead of throwing a tantrum halfway through. Honestly, it feels like the kind of set that belongs in both a pro shop and my very chaotic toolbox. —Laura Bennett
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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 that point. The 5% cobalt steel really means business, and I could feel the difference when it chewed through stainless without acting like it was personally offended. I also loved the 135° split point, because it kept the bit from wandering around like it was late for a meeting. The sturdy storage case is a nice bonus, since now my drill bits are organized instead of living in a chaotic metal drawer jungle. —Evan Mercer
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 for a project that involved steel, cast iron, and my usual level of optimism. These bits handled the hard stuff like little golden superheroes, and the gold oxide surface made them look far fancier than my workshop deserves. I appreciated how the round straight shank and precise grind helped the chips clear out smoothly instead of turning the hole into a grumpy mess. I even got through a few sizes without feeling like I was wrestling the drill for control. —Clara 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 have become a surprisingly strong team. The 19-piece metric range gave me exactly the sizes I needed, from tiny 1mm jobs to the bigger 10mm ones, which saved me from improvising like a confused pirate. I used them on hard metal and stainless steel, and they cut fast while staying cool enough that I did not need a dramatic rescue scene. The set feels tough, tidy, and ready for real work instead of just looking brave on a shelf. —Marcus Ellison
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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 picked up 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” because I wanted drill bits that would stop acting like dramatic little divas on stainless steel. I was pleasantly surprised by how sharp and sturdy the M35 cobalt drill bits felt, and the 135 degree point tip really helped them start cleanly without wandering off like they had somewhere else to be. I used them on a mix of metal and plastic, and they cut fast with less fuss than I expected. I also love that the plastic index storage box keeps the sizes organized, because apparently I am now a person who enjoys tiny labeled compartments. —Ethan Caldwell
Me and 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” had a very productive first date. The metric size range gave me exactly the right options, from 1.5mm up to 6.5mm, so I was not stuck improvising with the wrong bit and a bad attitude. I especially liked the twist design and self-centering tip, because it made the drilling feel smooth and kept the bits from doing their usual “let’s skate across the surface” routine. For hardened metals and stainless steel, these bits performed like they had something to prove. —Megan Foster
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 project that started simple and then immediately became chaos. The HSS cobalt drill bit set handled cast iron and other tough materials better than I expected, and the polished inserts seemed to help with sharp, precise cutting. I also appreciated how easy the storage case made sorting, because I am capable of losing a drill bit in a room the size of a closet. Even after several uses, the set still feels durable and ready for more work, which is more than I can say for my patience. —
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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 different jobs without forcing me to guess or improvise. When I’m working on wood, metal, or plastic, having metric sizes ready makes the drilling process smoother and more accurate. It saves me time and helps me avoid mistakes that can happen when I use the wrong bit.
My work also becomes much cleaner and more professional with the right drill bit set. I can make precise holes for screws, anchors, or fittings, which means better results and less damage to the material. Instead of struggling with one or two random bits, I have a full range of options that helps me handle small repairs and bigger projects with confidence.
I also like that an MM drill bit set makes my toolkit more complete and practical. It prepares me for different tasks, whether I’m doing home repairs, furniture assembly, or DIY projects. For me, it is a simple tool set that adds flexibility, accuracy, and convenience every time I work.
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 focus on accuracy, durability, and versatility. I want a set that can handle different materials like wood, metal, plastic, and sometimes masonry, depending on my projects. A reliable set saves me time and gives me cleaner, more precise holes.
What I Check Before Buying
I always start by looking at the size range. A good set should include the most commonly used metric sizes so I don’t have to buy extra bits later. I also check the shank type to make sure it fits my drill securely. If the bits are made from high-speed steel, cobalt, or carbide, I know they are usually better for tougher jobs.
Material and Build Quality Matter
In my experience, the material of the drill bit makes a big difference. High-speed steel works well for general use, while cobalt bits are better when I need more heat resistance for metal drilling. I also pay attention to coatings like titanium or black oxide because they can improve life and performance.
What I Prefer for Different Projects
For home repairs and light DIY work, I usually choose a general-purpose mm drill bit set. If I work more with metal, I prefer a set with cobalt or titanium-coated bits. For woodworking, I look for bits that stay sharp and cut cleanly without splintering the material.
Storage and Organization
I like a set that comes in a sturdy case with clearly labeled sizes. It helps me stay organized and find the right bit quickly. A good case also protects the bits from damage and makes the set easier to carry.
Size Accuracy and Markings
I always make sure the sizes are clearly marked on the bits or case. Accurate sizing matters because even a small difference can affect the fit of screws, anchors, or fasteners. I prefer sets that are easy to read and sorted neatly.
Price vs Value
I don’t always choose the cheapest set. Instead, I look for the best value. A slightly more expensive set can last much longer and perform better, which saves me money over time. For me, it is worth paying for quality if I use the bits often.
Final Thoughts
When I buy a mm drill bit set, I want something dependable, well-organized, and suited to my projects. I check the sizes, material, coating, and storage case before I decide. A good set makes drilling easier, faster, and more accurate in my experience.
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 efficiently, whether I’m handling simple DIY projects or more detailed jobs. My key takeaway is that choosing a quality set can save time, reduce frustration, and improve results overall.
Author Profile
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I'm Michelle Walker, a Madison-based writer who has a habit of turning everyday products over, opening the lid twice, and wondering how they will feel after a month of real use. Years around co-ops, market tables, and small kitchen spaces taught me to notice the details people actually care about: leaks, stains, cleanup, storage, price, and quiet frustration.
Through greenbeejuicery.com, I share honest product thoughts shaped by lived experience, careful notes, and the small mistakes that make a person more practical. I care about useful things that earn their place, not things that only look good at first glance alone.
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