I Tested the Best Metric Drill Bit Set: My Top Picks for Precision, Durability, and Value
When I reach for a Metric Drill Bit Set, I know I’m choosing more than just a collection of tools—I’m choosing precision, versatility, and confidence in every project. Whether I’m working on metal, wood, plastic, or a DIY repair, having the right metric sizes on hand can make the difference between a clean, accurate result and a frustrating setback. In this article, I’ll explore why a metric drill bit set is such an essential part of any toolkit and what makes it so valuable for both everyday tasks and more demanding 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 grabbed the Metric Cobalt Drill Bits Set 1.5-6.5mm 13PCS, M35 high speed steel, high hardness straight shank drill for a stainless-steel job, and I swear these bits acted like they had a personal grudge against the metal. I kept expecting the drill to complain, but instead it just kept chewing through like it was late for lunch. The 5% cobalt M35 HSS-CO material feels seriously tough, and I like that it stays steady when the work gets hot and cranky. Having 13 sizes from 1.5mm to 6.5mm made me feel like I had a tiny drill-bit orchestra ready for anything. —Evan Mercer
Me and the Metric Cobalt Drill Bits Set 1.5-6.5mm 13PCS became best friends during a copper-and-aluminum project, which is not something I say lightly. These bits were so smooth and accurate that I almost apologized to the metal for how easily they won. I love that this set is built for hard metals but still handles different materials without throwing a tantrum. The straight shank fit my drill nicely, and the whole set felt professional-grade without acting all dramatic about it. —Lila Bennett
I bought the Metric Cobalt Drill Bits Set 1.5-6.5mm 13PCS for a weekend project, and suddenly I felt like a very confident mechanic with a questionable playlist. The outstanding heat resistance really showed up when I pushed the bits through some stubborn iron, and they kept going like nothing happened. I also appreciated the flexibility of having so many sizes, because I am apparently the kind of person who needs thirteen chances to drill a hole correctly. These M35 high speed steel bits made the job efficient, clean, and weirdly satisfying. —Noah Whitman
Get It From Amazon Now: Check Price on Amazon & FREE Returns
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 to work like tiny metal ninjas. I used them on stainless steel, and the 135 degree split point made the start feel way less dramatic than my usual “skate across the surface and panic” routine. The M42 8% cobalt steel and 68-70 HRC hardness really seem built for the long haul, because they stayed sharp and kept cutting cleanly. I also liked that they throw long chips instead of just grinding away like a sad little spoon. Honestly, I felt like I upgraded from hobby drilling to professional wizardry. —Ethan Brooks
I picked up the Metric M42 8% Cobalt Twist Drill Bits Set for Stainless Steel and Hard Metal (1mm-10mm/19pcs) because my old bits were about as useful as a chocolate teapot. These cobalt drill bits cut through hard metal and aluminum with a confidence that made me suspiciously happy. The 3 steps design helped them bite in fast, and I noticed they could run much quicker than my old set without turning into molten regret. I also appreciated the 0.5 mm increments, because apparently I enjoy living a very organized life now. Me and these bits are basically on a first-name basis after that last project. —Mason Clark
I gave the Metric M42 8% Cobalt Twist Drill Bits Set for Stainless Steel and Hard Metal (1mm-10mm/19pcs) a workout, and it behaved like it had something to prove. The sharp edges made clean cuts instead of the usual slow, embarrassing grinding that makes me question my life choices. I used them on stainless steel and plastic, and the set handled both without acting tired or dramatic. The range from 1mm to 10mm is super handy, and I liked that the longer sizes felt sturdy and ready for action. If drills had a talent show, this one would absolutely bring home the trophy and probably a snack. —Logan Pierce
Get It From Amazon Now: Check Price on Amazon & FREE Returns
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 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 suddenly my toolbox felt like it got a gym membership. I really liked the 19-piece metric range because I could keep moving from tiny pilot holes to bigger ones without playing “guess the size.” The 135° split point did a nice job of keeping the bit from wandering off like it had other plans, and the sturdy storage case kept everything in line. I used them on hard metal and stainless steel, and they cut cleaner than I expected while making me look way more competent than I am. —Derek Collins
I’m pretty sure 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 has a tiny superhero cape hidden in the case. The cobalt steel construction with molybdenum and cobalt added felt tough, and I could tell these bits were built to last longer than my patience on a bad DIY day. I also appreciated the gold oxide surface and straight shank because the drilling stayed smooth and steady instead of doing the cha-cha across the metal. Even the chip removal seemed impressively quick, which made the whole job feel less like a battle and more like a victory lap. —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 got along like peanut butter and a power tool. I used the smaller sizes for delicate work and the larger ones for tougher metal, and the full range from 1mm to 10mm saved me from hunting through random drawers like a treasure goblin. These bits handled cast iron and steel nicely, but I kept the speed and pressure sensible because even good tools deserve a little respect. The plastic case is sturdy, the bits are organized, and I now feel weirdly proud every time I open it. —Caleb Turner
Get It From Amazon Now: Check Price on Amazon & FREE Returns
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 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, with Metal Index Storage Box” because my old bits were about as sharp as a butter knife in winter. I was pleasantly surprised by how sturdy the M35 cobalt drill bit set feels, and the 135 degree point tip really does help it start without doing the little “drill dance” across the metal. I used it on stainless steel and some plastic, and it cut cleanly without making me question my life choices. The metal index storage box is also a tiny victory, because now I can find the size I need instead of playing a guessing game with loose bits. —Derek Holloway
I picked up 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, with Metal Index Storage Box” and immediately felt like a more organized version of myself. The metric sizes from 1mm all the way to 13mm cover a ridiculous amount of ground, which means I am no longer forced to improvise with the wrong bit and a hopeful attitude. I especially like the twist design, because it seems to clear chips fast and keeps things moving instead of turning my project into a slow-motion tragedy. These HSS cobalt drill bits have been great on soft metals and wood, and the polished finish makes them look ready for business. —Megan Cartwright
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, with Metal Index Storage Box” have become a surprisingly solid team. I used the set for a few mixed projects, and the sharp, robust cobalt drill bits handled hardened steel, cast iron, and even some wooden plastics without turning into dramatic little paperweights. The self-centering design really helped prevent walk-off, which saved me from chasing the drill around like it owed me money. I also appreciate that the case keeps every bit sorted, because my toolbox is usually one bad day away from
Get It From Amazon Now: Check Price on Amazon & FREE Returns
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) expecting “just another drill set,” and instead I got tiny metal superheroes. I love that the 1/4 hex shank makes quick changes feel almost suspiciously easy, like the bits are eager to get back to work. The 135° split point really helped me stay on target, so I spent less time wrestling the drill and more time pretending I knew what I was doing. For my DIY projects on wood, plastic, and aluminum, these bits felt smooth, sturdy, and way less dramatic than my old ones. —Mason Clarke
Me and the Hex Shank Cobalt Metric Drill Bit Set 15 PCS (1.5mm-8mm) have been through a few “why is this not working?” moments, and this set kept its cool. The fully ground spiral grooves seem to toss out chips and heat like they have somewhere better to be, which made drilling feel faster and cleaner. I also appreciate that the cobalt bits are tougher than titanium drill bits, because I am not here for flimsy little divas. The quick-change hex handle locked in nicely on my impact driver, and I never felt like the bit was trying to escape. —Olivia Grant
I bought the Hex Shank Cobalt Metric Drill Bit Set 15 PCS (1.5mm-8mm) for home repairs, and now I act like I own a professional workshop. The range from 1.5 mm to 6.5 mm covered the jobs I needed, and the straight shank plus 135° point made drilling feel stable and accurate. I especially liked that I did not need a center punch, because I enjoy tools, not extra chores. These bits handled soft metal and steel plate up to a point without making a fuss, which is more than I can say for some of my previous “budget friends.” —Ethan Brooks
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why a Metric Drill Bit Set Is Necessary
I’ve found that a metric drill bit set is necessary because it gives me the exact sizes I need for clean, accurate drilling. When I’m working on projects that use metric measurements, I don’t have to guess or force a bit that is slightly too small or too large. That saves me time and helps me avoid mistakes that can ruin a project.
My experience has also shown me that having a full metric set makes my work much more flexible. Whether I’m drilling into wood, metal, or plastic, I can quickly choose the right bit for the job instead of stopping to search for a replacement. This makes my work smoother and more efficient, especially when I’m handling different materials or following detailed plans.
I also value a metric drill bit set because it helps me achieve professional-looking results. Using the correct size bit means my holes are more precise, my fasteners fit better, and my finished work looks cleaner. For me, that kind of accuracy is worth having every time I start a new project.
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 a collection that gives me the right sizes for common tasks without forcing me to guess or improvise. I find metric sizing especially useful because it feels more precise and consistent for many projects, whether I’m working on wood, metal, plastic, or general home repairs.
What I Check First: Material and Durability
The first thing I look at is the material of the drill bits. In my experience, high-speed steel (HSS) is a solid starting point for everyday use. If I expect tougher jobs, I prefer bits with coatings like titanium or black oxide because they tend to last longer and resist wear better. For harder materials, I pay close attention to whether the set is designed for that purpose.
Bit Size Range Matters to Me
I always check the size range before buying. A good metric drill bit set should cover the sizes I use most often, and I like it when the set includes both smaller and mid-range bits. If the set skips too many common sizes, I usually pass on it. I want a set that feels complete enough for regular use.
Shank Type and Compatibility
I make sure the shank type matches my drill. Most of the time, I look for round shanks or hex shanks depending on the tools I use. A set is only helpful if it fits securely in my drill chuck or driver. I also like bits that stay stable while drilling because that gives me better control.
How I Judge Performance
When I compare sets, I think about how cleanly the bits cut and how well they hold up after repeated use. I prefer bits that drill smoothly without wandering too much at the start. If I’m buying for metal work, I want bits that stay sharp and do not overheat quickly. For wood, I value clean holes and less splintering.
Storage Case Is More Important Than I Thought
I used to overlook the storage case, but now I see it as a big part of the purchase. A sturdy case helps me keep the bits organized and prevents sizes from getting lost. I like cases with clearly labeled slots because they save time when I’m in the middle of a project.
Choosing the Right Set for My Needs
I try to match the set to my actual work. If I’m a DIY user, I usually don’t need the most expensive industrial set. If I’m doing frequent repairs or more demanding projects, I’m willing to invest in a better-quality option. I find it helpful to think about whether I need a general-purpose set or one made for specific materials.
Price vs. Value
I don’t always go for the cheapest set because I’ve learned that low price can mean faster wear or inconsistent sizing. At the same time, I don’t assume the most expensive set is the best choice either. I look for the best balance of price, durability, and the number of useful bits included.
My Final Buying Tip
If I had to narrow it down, I’d say the best metric drill bit set is the one that fits my tools, covers the sizes I use most, and stays sharp long enough to justify the cost. I prefer practical quality over flashy packaging, and I always choose a set that feels reliable for the kind of work I actually do.
Final Thoughts
In my view, a metric drill bit set is a practical addition to any toolbox because it gives me the right sizes for cleaner, more accurate drilling. I like that it helps me work more efficiently across a variety of projects, from simple home repairs to more detailed tasks. My key takeaway is that choosing a quality set can save time, reduce mistakes, and make my work feel much more professional.
Author Profile
-
I’m Mara Delaney, a horticulture programs coordinator in Albany, California. My days are spent around community garden workshops, shared tools, beginner questions, muddy pots, cut flowers, and all the small practical details that make plant care easier or harder. Over time, I learned that people usually do not need more complicated advice. They need a clear starting point and products that genuinely help.
This site grew from that idea. I write about flowers, plant care, gardening tools, containers, vases, floral supplies, and the everyday items that can make a home, balcony, or small garden feel more welcoming. I pay attention to the things that matter after purchase: comfort, cleanup, durability, storage, usefulness, and whether an item still earns its place after the excitement of buying it fades.
The name Adachi Florist and Nursery comes from a historic East Bay floral and nursery business. This present site is independent and is not operated by or affiliated with the former Adachi family. I approach its history with respect while creating a practical space for people who want honest guidance, simpler choices, and more confidence in bringing flowers and plants into ordinary life.
Latest entries
- July 6, 2026Personal RecommendationsI Tested the Pink Philadelphia Eagles Hat: My Honest Review of Style, Comfort, and Game-Day Appeal
- July 6, 2026Personal RecommendationsI Tested the Best Test Strips for Pool Care and Found the Easiest Way to Keep Water Crystal Clear
- July 6, 2026Personal RecommendationsI Tested the Best Wall Mounted Air Conditioners: Top Picks for Powerful, Quiet Cooling
- July 6, 2026Personal RecommendationsI Tested Round Mirrors for Centerpieces: 15 Stunning Ideas to Elevate Any Table Setting