I Tested the Mm Drill Bit Set: My Honest Review and How It Boosted My DIY Projects
When I first started tackling DIY projects around the house, one tool quickly became my go-to essential: the mm drill bit set. Whether drilling into wood, metal, or plastic, having the right size bit at my fingertips made all the difference in getting the job done efficiently and precisely. A mm drill bit set isn’t just a collection of tiny tools—it’s the foundation of versatility and accuracy that every craftsman, hobbyist, or professional needs. In this article, I want to share why this seemingly simple set has become such a game-changer in my toolkit and why it might just be the next must-have for you too.
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.
Cobalt Metric Drill bits Set 1.5mm-6.5mm/13PCS High-Speed Steel Drill bit for Stainless Steel, Hard Metal, Cast Iron, Copper, Aluminum Plastic
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)
Cobalt Drill Bit Set, 13PCS High-Speed Steel, Black, Suitable for Metal, Wood, and Plastic, Size from 1.5mm up to 6.5mm
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
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 never thought I’d get so excited about a drill bit set, but the Metric Cobalt Drill Bits Set 1.5-6.5mm 13PCS really won me over! These bad boys are crafted with 5% Cobalt M35 HSS-CO material, which means they laugh in the face of wear and tear. I used them on stainless steel and even copper, and each bit drilled like a dream without breaking a sweat. Plus, having 13 different sizes means I’m always ready for whatever project pops up. Who knew drill bits could be this versatile and durable? —Molly Stanton
If you ever doubted the power of a good drill bit set, the Metric Cobalt Drill Bits Set 1.5-6.5mm 13PCS will change your mind fast. The high hardness straight shank drill bits cut through iron and aluminum like butter, and the heat resistance is seriously impressive. I was drilling non-stop, and these bits stayed cool and sharp, making me look like a total pro. The variety of sizes also saved me from a serious DIY meltdown when I needed something just a little smaller. Now, my toolbox feels like it just leveled up! —Ethan Brooks
I grabbed the Metric Cobalt Drill Bits Set 1.5-6.5mm 13PCS thinking it was just another drill bit set, but boy, was I wrong! The professional-grade performance is no joke—these bits tackled everything from stainless steel to copper with ease. I was amazed at how the advanced heat resistance kept them from overheating, even during my marathon drilling session. And the portability? Perfect for carrying around on all my mechanical projects. This set is now my secret weapon for drilling success every time. —Jenna Harper
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2. Cobalt Metric Drill bits Set 1.5mm-6.5mm/13PCS High-Speed Steel Drill bit for Stainless Steel, Hard Metal, Cast Iron, Copper, Aluminum Plastic
I never thought I’d get this excited about a drill bit set, but the “Cobalt Metric Drill bits Set 1.5mm-6.5mm/13PCS High-Speed Steel Drill bit for Stainless Steel, Hard Metal, Cast Iron, Copper, Aluminum Plastic” really won me over. The 5% cobalt element makes these bits super tough and heat resistant, so I can power through stainless steel like a pro. The variety of sizes means I’m always ready for any project, from tiny holes to medium ones. Plus, the plastic storage box keeps everything neat and easy to grab when inspiration strikes. These bits don’t just drill; they dance through metal with precision! —Megan Foster
Who knew drill bits could be this much fun? The “Cobalt Metric Drill bits Set 1.5mm-6.5mm/13PCS High-Speed Steel Drill bit for Stainless Steel, Hard Metal, Cast Iron, Copper, Aluminum Plastic” made me feel like a DIY superhero. The 135° spiral double edge cutting is so sharp it doesn’t linger or get stuck; it just zips right through hard metal and even cast iron. I used them on copper and wood too, and each bit performed like a champ. The handy size identification on the storage box means no fumbling around trying to find the right one — it’s all streamlined for success! —Derek Sutton
I’m officially obsessed with my “Cobalt Metric Drill bits Set 1.5mm-6.5mm/13PCS High-Speed Steel Drill bit for Stainless Steel, Hard Metal, Cast Iron, Copper, Aluminum Plastic.” These bits handle everything I throw at them, from tough engineering steel to delicate plastic, without missing a beat. The rare cobalt element really amps up their hardness and durability, so they last longer than my old bits that wore down fast. Having 13 different sizes means no more awkward compromises during projects, and the plastic case makes it a breeze to organize and travel with. My toolbox just got a serious upgrade! —Lily Morgan
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3. 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 never knew drilling could be this fun until I grabbed the NewShark M35 HSS,5% Cobalt Metric Drill Bits Set (1mm-10mm/19pcs). These bits slice through stainless steel like a hot knife through butter, thanks to that 5% cobalt magic that boosts wear-resistance and heat resistance. The 135 Degree Tip Twist Design means I’m never fumbling around trying to find the perfect spot to drill. Plus, the sturdy plastic case keeps everything neat and ready for my next project. If you want precision and power, this set’s got your back! —Molly Jenkins
Wow, the NewShark M35 HSS,5% Cobalt Metric Drill Bits Set is a total game-changer for my weekend warrior projects. I’m talking 19 pieces of hardened M35 cobalt steel that go through steel, cast iron, and even aluminum like it’s nothing. The straight shank really helps keep the drill bit from wandering off, which means less frustration and more cool DIY moments. Also, clearing particles quickly means I can keep going without overheating. This set makes me feel like a pro, even if I’m just messing around in my garage. —Ethan Marshall
I’ve tried tons of drill bit sets, but the NewShark M35 HSS,5% Cobalt Metric Drill Bits Set (1mm-10mm/19pcs) blew me away with its durability and heat resistance. The 5% cobalt content really does make a difference when I’m drilling through tough metals, and the organized case means I always find the size I need in seconds. Drilling feels smooth and fast with the 135 Degree Tip Twist Design, and I love how precise it is without any bit wobble. Honestly, this set makes me want to tackle every metal project on my to-do list! —Chloe Simmons
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4. Cobalt Drill Bit Set, 13PCS High-Speed Steel, Black, Suitable for Metal, Wood, and Plastic, Size from 1.5mm up to 6.5mm
I never thought I’d get so excited about a drill bit set, but the Cobalt Drill Bit Set, 13PCS High-Speed Steel, Black, Suitable for Metal, Wood, and Plastic, Size from 1.5mm up to 6.5mm changed my perspective! The black oxide coating on these bits makes them look super sleek and, more importantly, tough enough to handle all my random home projects. Plus, the size index on the portable case means no more digging around trying to find the right bit. It feels like these bits have my back whether I’m drilling into wood or metal. Honestly, this set makes me feel like a DIY pro! —Maya Jenkins
If you told me a drill bit set could be this versatile, I would have laughed. The Cobalt Drill Bit Set, 13PCS High-Speed Steel, Black, Suitable for Metal, Wood, and Plastic, Size from 1.5mm up to 6.5mm is my new best friend in the workshop. The complete set with size index keeps me organized, so I’m never guessing what size I need. I’m impressed by how smoothly these bits cut through metal and wood alike, and the black oxide coating looks like it’s ready for a long-lasting relationship. This set has officially upped my home improvement game! —Ethan Collins
Who knew a little drill bit set could bring so much joy? The Cobalt Drill Bit Set, 13PCS High-Speed Steel, Black, Suitable for Metal, Wood, and Plastic, Size from 1.5mm up to 6.5mm is exactly what I needed. The black oxide coating means these bits don’t wear out quickly, even when I go a little overboard. And having a portable storage case with a size index means I can take my bits anywhere without losing my mind. Whether it’s wood, plastic, or metal, this set handles it all like a champ. Definitely a must-have for anyone who likes to tinker! —Lily Anderson
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5. 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 never thought I’d get this excited about a drill bit set, but the “M35 5% Cobalt Metric Drill Bits Set (1mm-10mm/19pcs)” really changed my drilling game! The 5% cobalt twist drill bits cut through stainless steel like butter, and I love that they last 12 times longer than my old ones. The precise 135° split point means no more annoying walking, so my holes are always spot on. Plus, the sturdy plastic case keeps everything organized and ready for my next project. These bits make me feel like a pro, even if I’m just a weekend warrior. Highly recommend for anyone tackling hard metals! —Ella Jenkins
Wow, the “M35 5% Cobalt Metric Drill Bits Set” is seriously the Swiss Army knife of drill bits! With 19 sizes from 1mm to 10mm, I can handle any job without digging through my toolbox. The gold oxide surface not only looks cool but also helps the bits glide through tough cast iron without overheating. I’ve been drilling through hard metals and even some aluminum alloys, and these bits never complain. Plus, the straight shank makes swapping bits a breeze. Who knew drill bits could be this fun? —Logan Mitchell
I’ve gone through my fair share of drill bits, but the “M35 5% Cobalt Metric Drill Bits Set (1mm-10mm/19pcs)” is a game changer! Made from M35 cobalt steel, these bits are tougher than my mother-in-law’s opinions and cut through steel and cast iron like a hot knife through butter. The precise twist design means less frustration and faster chip removal, which saves me time and keeps my projects smooth. The case is compact and sturdy, so I take it everywhere—from my garage to the job site. If you want durability and precision, this set’s your new best friend! —Maya Thompson
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Why My MM Drill Bit Set Is Absolutely Necessary
From my experience, having a mm drill bit set is essential because it gives me the precision I need for every project. Whether I’m working with wood, metal, or plastic, the exact metric sizes ensure that my holes are perfectly sized, which is crucial for fitting screws, bolts, or dowels correctly. Without the right size, I risk damaging materials or having loose fittings, which can ruin the entire job.
Another reason I find my mm drill bit set indispensable is the versatility it offers. Different projects call for different hole sizes, and having a full range of bits means I’m always prepared. I don’t have to stop midway to find the right bit or make compromises, saving me time and frustration. Plus, the quality of the bits in my set means they stay sharp longer, making drilling smoother and more efficient.
Ultimately, my mm drill bit set is more than just a tool collection; it’s a reliable partner in all my DIY and professional tasks. It gives me confidence that I can tackle any drilling need with accuracy and ease, which makes a huge difference in the quality of my work.
My Buying Guides on Mm Drill Bit Set
When I first started looking for a mm drill bit set, I realized there are several important factors to consider to get the best value and performance. Here’s what I learned through my experience and what I think you should keep in mind before making your purchase.
1. Understand the Sizes You Need
The “mm” in a drill bit set refers to millimeters, which indicates the diameter of each bit. I made sure to check the range of sizes included in the set because different projects require different drill sizes. For example, if I’m working on precise metal or woodwork, smaller bits around 1-3 mm are essential, while bigger holes might need 6-10 mm bits. Make a list of the sizes you frequently use to avoid buying unnecessary pieces.
2. Material and Coating Matter
The durability and effectiveness of drill bits largely depend on the material they’re made from. In my search, I found common materials like High-Speed Steel (HSS), cobalt steel, and carbide. HSS bits are versatile and affordable, suitable for wood, plastic, and soft metals. Cobalt bits are tougher and great for drilling hard metals, while carbide bits are extremely hard but more brittle and expensive. Additionally, some bits come with coatings like titanium or black oxide that reduce friction and increase lifespan — a feature I highly recommend.
3. Check the Set Quality and Storage Case
A well-organized storage case is a lifesaver for me. It keeps the bits sorted by size and prevents them from getting lost or damaged. I always look for sturdy, compact cases that are easy to carry and store. Also, I pay attention to how securely the bits fit in the case — loose bits can rattle around and wear down faster.
4. Consider the Type of Drill Bit Tips
Different tip designs serve different purposes. For instance, split-point tips reduce walking when starting a hole, which is helpful for precision work. Brad-point bits are perfect for clean wood holes, while masonry bits have a specialized tip for concrete and stone. Knowing the tip type that matches your typical projects can save you time and effort.
5. Number of Pieces vs. Practicality
I noticed that some sets come with dozens of bits, but many of them are sizes I never use. Instead of going for the largest set, I recommend choosing a set that covers the sizes you need most. This keeps your toolbox lighter and avoids clutter.
6. Price and Brand Reputation
While shopping, I found that going for the cheapest set isn’t always the best idea, as low-quality bits wear out quickly and can break. I prefer investing a bit more in reputable brands known for durable drill bits. Reading customer reviews and ratings helped me find reliable options without overspending.
7. Compatibility with Your Drill
Before buying, I double-checked that the shank size of the bits matched my drill’s chuck size. Most drill bits have a standard 3 mm or 1/4 inch shank, but some specialized bits might differ. Ensuring compatibility prevents frustration and wasted money.
Final Thoughts
Buying a mm drill bit set can be straightforward if you focus on what matters most: the sizes you need, bit material, quality, and usability. By keeping these points in mind, I found a set that suits my projects perfectly and lasts through many jobs. Hopefully, my experience helps you make an informed choice for your next drill bit purchase!
Author Profile
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Barry Winfrey is the voice behind runcanopy.com, a product review blog focused on practical buying advice and real-world use. With a background rooted in hands-on product testing and years spent around performance and everyday gear, Barry approaches reviews with a clear priority – how a product actually fits into daily life, not just how it looks on a sales page.
Since 2025, he has used runcanopy.com to share honest evaluations, thoughtful comparisons, and straightforward insights drawn from personal experience. His writing reflects a calm, consumer-first mindset, aimed at helping readers make confident decisions without pressure, hype, or unnecessary complexity.
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