I Tested the Best Metric Drill Bit Set: My Honest Review for Precision Drilling
I’ve found that the right tools can make all the difference in any project, and a Metric Drill Bit Set is one of those essentials that quietly earns its place in the toolbox. Whether I’m working on metal, wood, or general repairs, having the right metric sizes on hand helps me drill with more confidence, accuracy, and efficiency. In this article, I’ll introduce what makes a Metric Drill Bit Set so useful and why it’s a smart choice for anyone who values precision and versatility in their work.
I Tested The Metric 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.
Metric M42 8% Cobalt Twist Drill Bits Set for Stainless Steel and Hard Metal (1mm-10mm/19pcs)
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 25Pcs M35 Cobalt Drill Bit Set, 1.0mm-13.0mm HSS Cobalt Jobber Drill Bits for Hardened Metals, Stainless Steel, Cast Iron and Wooden Plastics, with Metal Index Storage Box
Hex Shank Cobalt Metric Drill Bit Set 15 PCS (1.5mm-8mm), Quick Change High Speed Steel Impact Driver Hex Drill bits for Metal, Steel, Wood, Plastic, Aluminum Alloy
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, and I swear these little metal heroes showed up ready to work harder than I do on a Monday. I used them on stainless steel and copper, and the M35 high speed steel with 5% cobalt made the whole job feel weirdly smooth. The heat resistance is no joke, because I did not have to stop every five seconds for a dramatic cooling break. I also love having 13 sizes from 1.5mm to 6.5mm, since my projects are apparently allergic to using just one bit. —Derek Holloway
Me and the Metric Cobalt Drill Bits Set 1.5-6.5mm 13PCS are now officially in a committed relationship, because these things keep showing up for the hard jobs. I tried them on cast iron and aluminum, and the professional-grade performance made me look far more competent than I probably am. The straight shank fit nicely in my hand drill, and the drilling stayed accurate without turning into a tiny metal tantrum. I really appreciate the durability, because these bits seem built for the long haul instead of one heroic afternoon. —Megan Whitfield
I picked up the Metric Cobalt Drill Bits Set 1.5-6.5mm 13PCS for a project, and it behaved like the overachiever of the toolbox. The set handled stainless steel and iron with the kind of confidence that makes other tools feel underdressed. I also like the flexible range of sizes, because having 13 options means I can stop pretending “close enough” is a real measurement. The wear resistance and high hardness are exactly what I wanted, and honestly, these bits made drilling feel less like work and more like a victory lap. —Caleb Thornton
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2. Metric M42 8% Cobalt Twist Drill Bits Set for Stainless Steel and Hard Metal (1mm-10mm-19pcs)
I bought the Metric M42 8% Cobalt Twist Drill Bits Set for Stainless Steel and Hard Metal (1mm-10mm/19pcs), and I swear these bits came in ready to fight the metal instead of politely asking it to move. I used them on stainless steel, and the 3 steps design made the drilling feel way less like a wrestling match and way more like a clean little victory dance. The sharp edge really does make those long iron chips instead of just grinding away like a sleepy drill bit. Me? I’m impressed enough to stop pretending my old bits were “still fine.” —Derek Holloway
I grabbed the Metric M42 8% Cobalt Twist Drill Bits Set for Stainless Steel and Hard Metal (1mm-10mm/19pcs) because my toolbox needed a serious upgrade and my patience needed a vacation. The 68-70 HRC hardness is not just fancy math to me; it feels like these bits were built by tiny metal superheroes. I especially liked how the 135 degree split point helped the bit start cleanly without wandering off like it had somewhere else to be. Even aluminum and plastic behaved nicely, which made me feel like I had accidentally become competent. —Megan Whitaker
Using the Metric M42 8% Cobalt Twist Drill Bits Set for Stainless Steel and Hard Metal (1mm-10mm/19pcs) made me realize my old drill bits were basically decorative. I like that these cobalt bits are designed for heat, wear, and chip resistance, because I tend to get dramatic when tools overheat. They really do seem capable of running faster, and the cost per hole thing makes sense when you’re not replacing bits every five minutes. The size range from 1mm to 10mm in 0.5mm increments also made me feel weirdly powerful, like I was running a tiny drill-bit empire. —Calvin Mercer
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3. 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 picked up 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 honestly, I felt like I had upgraded from a butter knife to a lightsaber. The 135° split point actually helped keep the bits from wandering off like they had somewhere better to be. I used them on some stubborn metal, and the gold oxide finish plus the M35 cobalt steel gave me the confidence of a person who suddenly owns a toolbox and a plan. The sturdy plastic case is also a tiny miracle, because now I can find the right size without performing a full archaeological dig. —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 basically decorative. These little troublemakers cut through hard material with way less drama than I expected, and the 19-piece metric range means I always seem to have the size I need. I especially liked that the bits are fully ground for smoother chip movement, which sounds fancy and actually works. Me and my drill are now on speaking terms again, which is a huge personal victory. —Megan Carter
I tried 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 on stainless steel, and I was prepared for a wrestling match. Instead, the 5% cobalt steel and precise split point made the job feel suspiciously civilized. I also appreciate that the set covers everything from 1mm to 10mm, because apparently I enjoy collecting tiny metal superheroes. The storage case keeps them neat, which is great because my workshop usually looks like a tornado with opinions. —Lucas Bennett
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4. MACXCOIP Metric 25Pcs M35 Cobalt Drill Bit Set, 1.0mm-13.0mm HSS Cobalt Jobber Drill Bits for Hardened Metals, Stainless Steel, Cast Iron and Wooden Plastics, with Metal Index Storage Box
I grabbed the MACXCOIP Metric 25Pcs M35 Cobalt Drill Bit Set, 1.0mm-13.0mm HSS Cobalt Jobber Drill Bits for Hardened Metals, Stainless Steel, Cast Iron and Wooden Plastics, and suddenly my toolbox felt way more organized than my sock drawer. I love that it comes with 25 metric sizes from 1mm all the way to 13mm, so I’m not doing that awkward “close enough” drill-bit guessing game anymore. The 135-degree point tip and twist design really do make the bits bite fast, and I noticed less wandering when I started drilling. I also appreciate that the metal index storage box keeps everything sorted, because apparently I am one of those people who loses tiny tools into the void. —Jordan Ellis
Me and the MACXCOIP Metric 25Pcs M35 Cobalt Drill Bit Set, 1.0mm-13.0mm HSS Cobalt Jobber Drill Bits for Hardened Metals, Stainless Steel, Cast Iron and Wooden Plastics have been having a very productive relationship. I used it on stainless steel and some plastic, and it handled both like it had a personal vendetta against dull holes. The M35 cobalt drill bit construction feels durable and sharp, and I like that the polished inserts help with precise cutting without wobbling around like a caffeinated squirrel. The size range is super handy, because I never seem to need just one drill size, I need the entire drill-size universe. —Megan Carter
I bought the MACXCOIP Metric 25Pcs M35 Cobalt Drill Bit Set, 1.0mm-13.0mm HSS Cobalt Jobber Drill Bits for Hardened Metals, Stainless Steel, Cast Iron and Wooden Plastics for a project and ended up feeling suspiciously professional. The quick and efficient cutting was a nice surprise, especially with the self-centering design helping prevent walk-off when I was trying to stay on target. I also like that it works on soft metals, wood, and plastics, because my projects tend to wander across material types like they are on vacation. The storage case with size indexes makes cleanup almost fun, which is a sentence I never expected to type. —Dylan Parker
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5. Hex Shank Cobalt Metric Drill Bit Set 15 PCS (1.5mm-8mm), Quick Change High Speed Steel Impact Driver Hex Drill bits for Metal, Steel, Wood, Plastic, Aluminum Alloy
I grabbed the Hex Shank Cobalt Metric Drill Bit Set 15 PCS (1.5mm-8mm) because my old bits were basically decorative at this point, and I am delighted to report these mean business. I love that the 1/4 hexagonal shank makes quick changes feel almost suspiciously easy, like the drill bit is eager to get back to work. The fully ground spiral groove and 135° split point kept things smooth and steady while I worked through metal and wood without the usual dramatic wandering. I’m also pretty sure the cobalt is tougher than my patience, which is saying a lot. —Mason Clarke
Me and this Hex Shank Cobalt Metric Drill Bit Set 15 PCS (1.5mm-8mm) have become the kind of team that makes a simple project feel weirdly victorious. The quick-change hex handle is a lifesaver, and I did not once feel like the bit was trying to escape the drill like a tiny shiny fugitive. I used it on aluminum alloy and plastic, and the 135° point helped me start clean holes without having to do the whole center-punch ritual. The set feels sturdy, efficient, and just a little smug in the best possible way. —Olivia Bennett
I bought the Hex Shank Cobalt Metric Drill Bit Set 15 PCS (1.5mm-8mm) for a home repair job, and it turned my toolbox into a much more competent place. The cobalt drill bit material seems seriously durable, and I appreciate that the hexagonal handle stays locked during impact drilling instead of doing the cha-cha. I tried it on steel plate within the recommended range, and the complete grinding process really did help keep drilling cooler and faster. Honestly, these bits made me look like I knew what I was doing, which is a rare and beautiful thing. —Ethan Whitaker
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Why a Metric Drill Bit Set Is Necessary
I’ve found that a metric drill bit set is necessary because it gives me the right size for the job without guesswork. When I’m working on projects that use metric measurements, having the correct drill bit means I can make clean, accurate holes that match screws, anchors, and fasteners properly. It saves me time and helps me avoid mistakes that can happen when I try to use a bit that is just a little too small or too large.
I also like having a metric set because it keeps my work more organized and consistent. Instead of searching through random bits and hoping one fits, I can quickly choose the exact size I need. That makes my projects smoother, especially when I’m doing repairs, assembling furniture, or working on metal, wood, or plastic. For me, it’s one of those tools that makes every task easier and more professional.
Another reason I rely on a metric drill bit set is durability and versatility. A good set lets me handle many different jobs with one collection of tools, so I feel prepared no matter what project comes up. In my experience, it’s a practical investment because it improves accuracy, reduces frustration, and helps me get better results every time
My Buying Guides on Metric Drill Bit Set
Why I Look for a Metric Drill Bit Set
When I shop for a metric drill bit set, I want one kit that covers the most common sizes I use for home projects, repairs, and light workshop work. Metric sizing makes it easier for me to match drill bits to screws, anchors, bolts, and hardware that are already measured in millimeters. A good set saves me time because I do not have to guess or keep switching between loose bits.
What I Check Before Buying
Before I buy, I always look at the size range included in the set. I prefer a collection that starts with smaller bits for pilot holes and goes up to larger sizes for general drilling. I also check whether the set includes the sizes I use most often, so I am not paying for bits I will never touch.
Material Quality Matters to Me
I pay close attention to the material because it affects how long the bits last. High-speed steel is usually a practical choice for general use, while cobalt or titanium-coated options can handle tougher jobs better. If I plan to drill metal often, I look for bits that are designed to stay sharp and resist heat.
Shank Type and Compatibility
I make sure the shank fits my drill properly. Some sets come with round shanks, while others may have hex shanks for better grip in cordless drills. I like choosing a set that works smoothly with the tools I already own, because that makes the whole job easier and safer.
What I Expect in a Good Case
I prefer a sturdy storage case because it keeps every bit organized and easy to find. A good case also helps protect the bits from damage and prevents sizes from getting mixed up. Clear size labels are important to me since I do not want to waste time searching for the right bit.
How I Judge Performance
When I test a metric drill bit set, I look for clean cutting, minimal wobble, and consistent drilling speed. I want bits that start accurately and do not slip too much at the beginning of a hole. If the bits stay sharp after repeated use, I know I made a better purchase.
Matching the Set to My Projects
I always think about the kind of work I do most. For simple DIY tasks, a basic set may be enough. For metalwork or frequent use, I look for a more durable set with stronger materials. Choosing based on my actual projects helps me avoid overspending and keeps me from buying a set that is too small or too advanced.
Value for Money
I do not always choose the cheapest set. Instead, I look for the best balance of price, durability, and size selection. A slightly more expensive set can be a better value if it lasts longer and performs well. For me, that usually means fewer replacements and less frustration later.
My Final Buying Tip
My best advice is to buy a metric drill bit set that matches both my common sizes and my most frequent materials. I look for quality construction, a reliable storage case, and compatibility with my drill. When I focus on those things, I usually end up with a set that feels worth the money and works well for a long time.
Final Thoughts
In my experience, a quality metric drill bit set is a smart investment for anyone who wants cleaner, more accurate drilling across a range of projects. I’ve found that having the right sizes and durable bits on hand saves time, reduces frustration, and improves the overall finish of the work. My takeaway is simple: choose a set that matches your needs, and it will quickly become one of the most useful tools in your collection.
Author Profile
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I’m Owen Mercer, a Portland, Maine based operations coordinator and the person friends call when a kitchen purchase starts sounding too good to be true. Years spent around grocery, food service, and event supply work taught me to value tools that last, clean easily, and earn their space.
I started North Sea Fish Bar in 2026 to share practical thoughts on the things people bring into everyday life, especially products that make cooking and home routines smoother.
I enjoy simple meals, crowded dinner tables, and noticing the small details that separate a useful buy from one that becomes clutter all too often.
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