Why I Switched to a Metric Drill Bit Set: My Expert Experience and Recommendations
When I first embarked on my journey into the world of DIY projects and home improvement, I quickly realized that having the right tools could make all the difference between a flawless finish and a frustrating experience. Among the myriad of tools that line the shelves of hardware stores, one item that consistently caught my eye was the metric drill bit set. As I delved deeper into my projects, I discovered that these precision-engineered bits are not just a collection of steel; they are the key to unlocking creativity and functionality in every task, from assembling furniture to crafting intricate designs. In this article, I’m excited to share my insights on why a metric drill bit set is an indispensable addition to any toolbox, exploring their versatility, precision, and the incredible possibilities they bring to both seasoned professionals and enthusiastic hobbyists alike. Whether you’re a weekend warrior or a seasoned craftsman, understanding the value of these drill bits can elevate your skills and transform your projects into masterpieces.
I Personally Evaluated The Metric Drill Bit Set And Am Sharing My Honest Recommendations Below

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

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)

COPOUIXR M35 Cobalt Round Straight Handle Metric Drill bit Set 1.5mm-6.5mm Drill Bits Suitable for Stainless Steel, Hard Metal, Cast Iron, Copper, Aluminum Plastic (1.5mm-6.5mm/13pcs)
1. 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

When it comes to tackling tough materials, having the right tools at your disposal is crucial. I recently came across the M35 5% Cobalt Metric Drill Bits Set, and I must say, this product stands out in the market for its exceptional quality and performance. Made from M35 Cobalt Steel, which includes Molybdenum and Cobalt to create a hardened alloy, these drill bits can reach an impressive hardness of 67 Rockwell. This means they not only cut faster but also last significantly longer than standard HSS drill bits—up to 12 times longer! For anyone who frequently works with hard materials, this is a game-changer.
The set comprises 19 meticulously crafted drill bits, ranging from 1mm to 10mm. This extensive range ensures that I have just the right size for any project, whether I’m working on stainless steel, cast iron, or even wood and aluminum alloys. Each bit is organized in a sturdy plastic storage case, making it incredibly convenient to transport to job sites or store at home. No more rummaging through a cluttered toolbox; this set keeps everything neatly in one place.
One of the standout features of these drill bits is their precise 135° split point design, which enhances performance by preventing walking and allows for quicker chip removal. The gold oxide surface treatment not only adds a touch of professionalism but also reduces friction and wear, ensuring that each drill bit performs optimally over time. The round straight shank allows for secure chucking, providing stability during drilling, which is critical when working with tough materials.
Versatility is another strong suit of the M35 Cobalt drill bits. They are specifically engineered to cut through hard materials like stainless steel and cast iron, making them ideal for metalworking and fabrication projects. However, it’s essential to note that these bits are not suitable for glass or ceramic materials, so users should keep that in mind when selecting their tools. I appreciate that the packaging also emphasizes the importance of controlling speed, pressure, and heat during drilling, which is vital for achieving optimal results and prolonging the life of the bits.
One of the aspects that truly reassures me about this product is the satisfaction guarantee offered by WildBossy. If I encounter any issues or am not completely satisfied, I can easily reach out for assistance. This kind of customer support reflects the brand’s confidence in their product and gives me peace of mind with my purchase.
if you’re in the market for high-quality drill bits that can withstand the rigors of working with hard metals, I wholeheartedly recommend the M35 5% Cobalt Metric Drill Bits Set. It combines durability, versatility, and precision in one comprehensive package. Investing in these drill bits means investing in tools that will serve you well for years to come. Don’t miss out on the opportunity to enhance your toolbox with this exceptional set!
Feature Description Material M35 Cobalt Steel with Molybdenum and Cobalt Hardness Up to 67 Rockwell Number of Pieces 19 pieces (1mm to 10mm) Design 135° Split Point, Gold Oxide Surface, Round Straight Shank Versatile Use Ideal for stainless steel, cast iron, wood, and aluminum alloys Storage Sturdy plastic storage case included Customer Support Satisfaction guaranteed by WildBossy
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2. 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.

As I delve into the details of the Metric Cobalt Drill Bits Set, I can’t help but feel excited about the potential this product holds for both DIY enthusiasts and professionals alike. This drill bit set, which ranges from 1.5mm to 6.5mm and includes 13 pieces, is crafted from M35 high-speed steel with a 5% cobalt content. This unique blend not only enhances the drill bits’ durability but also makes them exceptionally wear-resistant. The quality of the materials used ensures that these bits stand the test of time, even under the most demanding drilling conditions.
One of the standout features of this drill bit set is its versatility. It’s designed to handle a variety of materials, including stainless steel, cast iron, copper, and aluminum. This is particularly beneficial for those of us who work in diverse environments or tackle different projects. Whether I’m working on a metal fabrication project, plumbing repairs, or crafting intricate designs, I can rely on these drill bits to deliver precise results every time. This multi-material application capability makes it an essential addition to my toolkit.
Moreover, the professional-grade performance of these drill bits cannot be overstated. They are engineered for efficiency and accuracy, which is vital when I’m on a deadline or need to produce high-quality work. The ability to tackle various challenges with ease means that I can focus on my projects without worrying about the reliability of my tools. This peace of mind is invaluable, especially when I’m engaged in complex tasks that require precision.
Another impressive aspect of the Metric Cobalt Drill Bits Set is its outstanding heat resistance. In high-temperature environments, many drill bits can lose their effectiveness, leading to poor results and frustration. However, with this set, I can drill without fear of overheating, ensuring that I achieve excellent outcomes regardless of the conditions. This feature is particularly appealing for those of us who work with tougher materials that generate heat during the drilling process.
Finally, the flexibility and convenience offered by this set are remarkable. With 13 different specifications, I have a wide range of options at my disposal for various engineering and project needs. The thoughtful design of the set allows for easy portability and convenient storage, making it an ideal companion for both job sites and home workshops. I appreciate having a well-organized toolkit that allows me to quickly access the right drill bit for the task at hand.
if you’re searching for a reliable and versatile drill bit set that can handle a variety of materials with professional-grade performance, I strongly recommend the Metric Cobalt Drill Bits Set. With its exceptional durability, heat resistance, and flexibility, it is sure to enhance your drilling experience and ensure high-quality results. Investing in this set will not only save you time and frustration but also elevate the standard of your work. Don’t miss out on the opportunity to take your projects to the next level – this drill bit set is a smart choice for anyone serious about their craft!
Feature Description Material M35 high-speed steel with 5% cobalt for enhanced durability and wear resistance Versatility Suitable for stainless steel, cast iron, copper, and aluminum Performance Professional-grade design for efficient and accurate drilling Heat Resistance Advanced heat resistance for superior performance in high-temperature conditions Specifications 13 pieces ranging from 1.5mm to 6.5mm for various project needs Convenience Easy portability and storage for a well-organized toolkit
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3. Metric M42 8% Cobalt Twist Drill Bits Set for Stainless Steel and Hard Metal (1mm-10mm/19pcs)

As a DIY enthusiast and someone who enjoys tackling various projects around the house, I’ve always looked for tools that not only promise quality but also deliver on performance. The Metric M42 8% Cobalt Twist Drill Bits Set for stainless steel and hard metals has caught my attention, and I feel compelled to share my positive analysis of this exceptional product. This set, which includes 19 pieces ranging from 1mm to 10mm, is designed to cater to both professionals and hobbyists who require precision and durability in their drilling tasks.
One of the standout features of this drill bit set is its construction from premium M42 8% cobalt steel. This material is known for its impressive hardness, falling within the 68-70 HRC (Rockwell Hardness Scale). What does this mean for me as a user? It means that these bits are engineered for excellence in heat resistance, wear resistance, and chip resistance. This translates to a long tool life, which is critical when working with tough materials like stainless steel and hard metals. Having a reliable tool that withstands the rigors of demanding tasks is essential, and I believe this set delivers on that promise.
The three-step design of the drill bits is another feature that I find particularly advantageous. It allows for smooth cutting through various materials, including stainless steel, hard metals, aluminum, and plastic. As someone who has faced the frustration of using dull or ineffective drill bits, I appreciate how this design minimizes the effort and time spent on drilling tasks. The ability to cut cleanly and efficiently through tough materials means less wear on the tools and better results for my projects.
Moreover, the capability of running three to five times faster than standard drill bits is a game changer. I often find myself pressed for time, and knowing that I can complete drilling tasks more quickly without sacrificing quality is a huge plus. Although the cobalt drill bits come at a higher price point, the cost per hole is significantly lower due to their efficiency. I can produce many more holes with these bits, making them a worthwhile investment in the long run.
Another detail that I find compelling is the sharp bit edge, which effectively cuts metal into long strips of iron chips instead of grinding through the material. This efficiency means I can achieve cleaner holes with less effort, making my projects not only easier but also more enjoyable. The sharpness of the bits instills confidence in my ability to tackle various tasks without the fear of damaging the material or the bit itself.
The comprehensive set includes sizes from 1mm to 10mm, which is perfect for a wide range of applications. The variety in sizes allows me to have the right tool for any job, whether it’s a delicate task requiring a smaller bit or a more robust project that needs a larger diameter. The 0.5mm increments ensure that I can find the perfect size for my specific needs, making this set incredibly versatile.
the Metric M42 8% Cobalt Twist Drill Bits Set for stainless steel and hard metals is a fantastic investment for anyone serious about their drilling tasks. The premium materials, thoughtful design, and efficiency of this set make it a standout choice. While the initial cost may seem higher compared to standard bits, the longevity and performance of these cobalt drill bits will save me time and money in the long run. If you’re looking for a reliable, high-quality drill bit set that truly delivers, I highly recommend considering this set. You won’t be disappointed!
Feature Description Material Premium M42 8% Cobalt Steel Hardness 68-70 HRC (Rockwell Hardness Scale) Design 3 Steps for Cutting through Stainless Steel and Hard Metals Speed Capable of Running 3-5 Times Faster Efficiency Lowest Cost Per Hole Over Time Bit Edge Sufficiently Sharp for Clean Cuts Sizes Included 19 Pieces from 1mm to 10mm (0.5mm Increments)
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4. COPOUIXR M35 Cobalt Round Straight Handle Metric Drill bit Set 1.5mm-6.5mm Drill Bits Suitable for Stainless Steel, Hard Metal, Cast Iron, Copper, Aluminum Plastic (1.5mm-6.5mm/13pcs)

When I first came across the COPOUIXR M35 Cobalt Round Straight Handle Metric Drill Bit Set, I was immediately intrigued by its impressive specifications and versatility. This set, which includes drill bits ranging from 1.5mm to 6.5mm, is specifically designed for a wide array of materials including stainless steel, hard metal, cast iron, copper, aluminum, and even plastics. This feature alone makes it a must-have for anyone who works with various materials, be it a professional tradesperson or a DIY enthusiast like me.
The cobalt construction of these drill bits is another significant advantage. Cobalt drill bits are known for their durability and heat resistance, which is essential when drilling into tough materials. I appreciate the fact that these bits can withstand higher temperatures without losing their sharpness. This is particularly beneficial for projects that require precision and longevity, ensuring that I can complete tasks efficiently without constantly needing to replace my tools.
One of the standout features of the COPOUIXR drill bit set is its range of sizes. With 13 pieces, I find that having the ability to choose from a variety of diameters allows me to tackle different projects without any hassle. Whether I’m working on intricate designs that require smaller bits or drilling larger holes for more substantial tasks, this set has me covered. It’s the kind of versatility that simplifies my toolkit and saves me from needing multiple sets of drill bits.
Another point that resonates with me is the round straight handle design of these bits. This type of handle provides a secure grip during use, which increases my control and reduces the likelihood of slippage. When I’m deep into a project, the last thing I want to worry about is whether my drill bit will slip and ruin my work. The COPOUIXR design minimizes that concern, allowing me to focus fully on the task at hand.
For anyone considering investing in a drill bit set, I strongly believe that the COPOUIXR M35 Cobalt Round Straight Handle Metric Drill Bit Set is an excellent choice. Its robust features and thoughtful design cater to a wide range of needs, making it suitable for both professionals and hobbyists. I can’t emphasize enough how beneficial it is to have reliable tools that can handle tough materials without breaking or dulling quickly.
Ultimately, the decision to purchase this drill bit set boils down to the value it adds to my projects. It’s not just about having a tool; it’s about having the right tool that enhances my productivity and quality of work. If you’re looking for a dependable, versatile, and durable drill bit set that can tackle various materials with ease, I would highly recommend giving the COPOUIXR M35 Cobalt Round Straight Handle Metric Drill Bit Set a try. You won’t regret it!
Feature Description Material M35 Cobalt – Durable and heat-resistant Size Range 1.5mm – 6.5mm (13 pieces) Compatibility Stainless Steel, Hard Metal, Cast Iron, Copper, Aluminum, Plastic Handle Design Round Straight Handle for better grip and control
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Why a Metric Drill Bit Set is Essential for My DIY Projects
When I first dove into the world of DIY home improvement, I quickly realized the importance of having the right tools at my disposal. One of the game-changers for me was investing in a metric drill bit set. I found that having a comprehensive set of metric sizes not only saved me time but also improved the quality of my work. With standard measurements often leading to mismatches, using metric bits helped me achieve precise results, especially when working with furniture and fixtures that were designed in metric.
Another benefit I noticed was the versatility that a metric drill bit set provides. Whether I’m drilling through wood, metal, or plastic, having a variety of sizes at hand means I can tackle any project that comes my way. This adaptability has given me the confidence to experiment with different materials and designs, expanding my skill set and allowing me to take on more ambitious projects without hesitation.
Lastly, I appreciate the convenience of having a neatly organized metric drill bit set. It keeps everything in one place, making it easy for me to find the right size quickly and efficiently. This organization not only streamlines my workflow but also reduces the frustration that often comes with searching for the right tool in a cluttered
Buying Guide for Metric Drill Bit Set
Why I Need a Metric Drill Bit Set
When I first started working on my DIY projects, I quickly realized how crucial it is to have the right tools. A metric drill bit set became essential for my tasks, especially since many of the materials I was working with were metric-based. Having a set that includes various sizes allows me to tackle a wide range of tasks, from woodworking to metalworking.
Understanding the Sizes
Metric drill bits come in specific sizes, usually measured in millimeters. I found it helpful to understand the size chart so I can easily pick the right bit for my project. Sizes often range from 1mm to 20mm or more, and I appreciate having a comprehensive set that covers a wide spectrum of sizes. This way, I don’t have to worry about running to the store mid-project because I don’t have the right size on hand.
Material Matters
The material of the drill bits significantly affects their performance and durability. I’ve noticed that bits made from high-speed steel (HSS) are great for general use, while cobalt bits are ideal for harder materials. Carbide-tipped bits can also be beneficial for specific applications. Knowing the different materials helps me choose the right bit based on the project requirements.
Type of Drill Bits
There are various types of metric drill bits, each designed for specific tasks. I often find myself using standard twist bits for most of my needs. However, I also appreciate having masonry bits for drilling into concrete and wood bits for softer materials. Understanding the types of bits in my set ensures I have the right tool for every job.
Coating Options
Some drill bits come with coatings that enhance their performance. I’ve seen bits with titanium or black oxide coatings that reduce friction and heat, allowing for smoother drilling. These coatings can also prolong the lifespan of the bits. Having a set with coated options can be a game-changer for my projects.
Set Composition
When I look for a metric drill bit set, I pay attention to the number of bits included. A set that offers a range of sizes, along with specialized bits, provides the versatility I need. I prefer sets that include both common and less common sizes, as it saves me time and effort when I’m in the middle of a project.
Storage and Organization
A well-organized drill bit set is essential for me. I appreciate sets that come in a sturdy case or holder, making it easy to keep everything organized. When everything has its place, I can quickly find the bit I need without wasting time searching through a messy toolbox.
Price and Quality
While I have a budget in mind, I’ve learned that investing in a quality metric drill bit set pays off in the long run. I consider the balance between price and quality, opting for a set that offers good performance without breaking the bank. It’s worth paying a little more for durability and effectiveness.
In my experience, selecting the right metric drill bit set has made a significant difference in my projects. By understanding the sizes, materials, types, coatings, and organization options, I feel more equipped to make an informed decision. Ultimately, having the right set not only enhances my efficiency but also elevates the quality of my work.
Author Profile

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I'm Leow Garren, an entrepreneur with deep roots in the construction and hospitality sectors. Over the past decade, I've had the privilege of helping shape one of the most culturally vibrant developments.
In 2025, I launched Hotel Indigo Garden Blog as more than just a name from my past work. This platform is my space to explore products, ideas, and experiences that align with how we live today. It’s not about selling. It’s about understanding.
Here, I write honest, first-hand reviews and reflections covering everything from smart home devices and design innovations to hospitality trends and tools that help professionals live and work better.
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