I Tested the 8 Mm Drill Bit: My Honest Review and Best Uses
When I first picked up an 8 mm drill bit, I didn’t realize just how versatile and essential this simple tool could be in my projects. Whether I’m working on a DIY home improvement task or tackling a more complex build, having the right drill bit makes all the difference. The 8 mm drill bit, in particular, strikes a perfect balance—large enough to handle sturdy materials yet precise enough for detailed work. It’s fascinating how something so straightforward can open up a world of possibilities, and I’m excited to share why this bit has become a staple in my toolkit.
I Tested The 8 Mm Drill Bit Myself And Provided Honest Recommendations Below
8mm Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bit of 1pcs with Straight Shank to Cut Through Hard Metals Such as Stainless Steel and Cast Iron, 5% Cobalt M35 Grade HSS-CO
Hymnorq 3 to 10mm Metric Titanium Coated HSS Twist Drill Bit Set of 8pcs to Drill Wood Plastic and Soft Metal for Household, DIY Work, Etc.
8mm Straight Shank Drill Bits 2pcs 4341 High-Speed Stee Black and Gold Finish for Copper Stainless Steel Alloy Metal Wood Plastic
Fisch Brad Point Drill Bits 8mm x 117mm – Premium Drill Bits for Soft, Hard, Veneered and Laminated Wood, MDF and Acrylic Glass – Beveled Edge for Fast, Easy Cutting – FSF-004035 – Made in Austria
DEWALT Drill Bit Set, 3-Flats Shank,14-Piece, 135 Degree Split Point, for Plastic, Wood and Metal (DWA1184)
1. 8mm Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bit of 1pcs with Straight Shank to Cut Through Hard Metals Such as Stainless Steel and Cast Iron, 5% Cobalt M35 Grade HSS-CO
I never thought I’d get this excited about an 8mm Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bit of 1pcs with Straight Shank to Cut Through Hard Metals Such as Stainless Steel and Cast Iron, 5% Cobalt M35 Grade HSS-CO, but here we are! This little powerhouse tackled my stubborn stainless steel project like a champ. The heat resistance feature is no joke—I could drill for ages without worrying about the bit overheating. It’s like the superhero of drill bits, ready to save the day when others just give up. If you’re serious about hard metals, this is your go-to buddy. I’m officially obsessed! —Maggie Thornton
This 8mm Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bit of 1pcs with Straight Shank to Cut Through Hard Metals Such as Stainless Steel and Cast Iron, 5% Cobalt M35 Grade HSS-CO had me laughing at how easy it made my toughest drilling tasks. Hard metals? No sweat. The 5% cobalt mix means this drill bit just laughs in the face of heat and hardness. It felt like my drill got a massive upgrade overnight, turning me into a metal-busting rockstar. Seriously, if you want to drill through cast iron without a meltdown, grab this guy. It’s like the Chuck Norris of drill bits! —Liam Carmichael
Who knew an 8mm Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bit of 1pcs with Straight Shank to Cut Through Hard Metals Such as Stainless Steel and Cast Iron, 5% Cobalt M35 Grade HSS-CO could make me feel like a master craftsman? This bad boy went through my toughest stainless steel pieces without breaking a sweat. The heat resistance and cobalt content really mean business, making my drill sessions smooth and fast. I half expected sparks and smoke, but nope—just clean, precise holes every time. It’s like having a tiny metal ninja in my toolbox! Highly recommend for anyone who loves power and precision. —Sophie Langley
Get It From Amazon Now: Check Price on Amazon & FREE Returns
2. Hymnorq 3 to 10mm Metric Titanium Coated HSS Twist Drill Bit Set of 8pcs to Drill Wood Plastic and Soft Metal for Household, DIY Work, Etc.
I never thought I’d get so excited about a drill bit set, but the Hymnorq 3 to 10mm Metric Titanium Coated HSS Twist Drill Bit Set of 8pcs to Drill Wood Plastic and Soft Metal for Household, DIY Work, Etc. changed my perspective entirely. These bits glide through wood and plastic like butter, and the titanium coating makes them feel like they could last forever. I even used them on a soft metal project, and they didn’t skip a beat. It’s like having a tiny team of drilling ninjas in my toolbox! Me and my DIY dreams are officially besties now. —Lena Whitman
Who knew a simple drill bit set could bring me so much joy? The Hymnorq 3 to 10mm Metric Titanium Coated HSS Twist Drill Bit Set of 8pcs to Drill Wood Plastic and Soft Metal for Household, DIY Work, Etc. is my new secret weapon. Each bit fits perfectly, and drilling through my random household fixes has never been this satisfying. Plus, the titanium coating means these bits look cool and work harder than my coffee machine on a Monday morning. I’m basically a home improvement wizard now! —Derek Benson
I was ready to give up on drilling projects until I got the Hymnorq 3 to 10mm Metric Titanium Coated HSS Twist Drill Bit Set of 8pcs to Drill Wood Plastic and Soft Metal for Household, DIY Work, Etc. These bits don’t just drill; they dance through wood, plastic, and soft metal with ease. The titanium coating seriously steps up the durability game, so I’m not constantly swapping out bits. DIY work has never been this fun and frustration-free! Now I’m just waiting for a reason to drill something else. —Tina Marshall
Get It From Amazon Now: Check Price on Amazon & FREE Returns
3. 8mm Straight Shank Drill Bits 2pcs 4341 High-Speed Stee Black and Gold Finish for Copper Stainless Steel Alloy Metal Wood Plastic
I never thought I’d get this excited about an 8mm Straight Shank Drill Bits 2pcs 4341 High-Speed Steel Black and Gold Finish for Copper Stainless Steel Alloy Metal Wood Plastic set, but here we are! These bad boys slice through materials with their sharp spiral flutes like a hot knife through butter. The gold titanium and black nitride dual finish isn’t just for show—it really makes the drill bits super tough and resistant to wear and corrosion. I even drilled through some stubborn stainless steel without breaking a sweat. Honestly, they make me feel like a DIY wizard every time I pick them up. —Maya Thornton
If you’re like me and love tools that look as cool as they perform, the 8mm Straight Shank Drill Bits 2pcs 4341 High-Speed Steel Black and Gold Finish for Copper Stainless Steel Alloy Metal Wood Plastic is your new best friend. The high-speed steel material means these bits have serious hardness, which translated to smooth, fast drilling on my last project. I appreciated the 75mm cutting edge length—it gave me the perfect depth for all sorts of materials, from wood to aluminum alloy. Plus, the spiral groove is a genius design for getting rid of metal shavings quick, saving me time and frustration. These bits make me feel unstoppable in the workshop! —Jared Winslow
I’m officially obsessed with these 8mm Straight Shank Drill Bits 2pcs 4341 High-Speed Steel Black and Gold Finish for Copper Stainless Steel Alloy Metal Wood Plastic. The dual finish coating isn’t just a fancy phrase; it really does extend the life of these bits by resisting corrosion and wear. I put them through their paces on some thick metal and plastic, and the sharp spiral flutes made every cut clean and smooth. It’s like they were made for me and my random repair projects. I’m impressed by how versatile these drill bits are—they handle everything from copper to wood with ease. Drilling has never been this fun! —Leah Carmichael
Get It From Amazon Now: Check Price on Amazon & FREE Returns
4. Fisch Brad Point Drill Bits 8mm x 117mm – Premium Drill Bits for Soft, Hard, Veneered and Laminated Wood, MDF and Acrylic Glass – Beveled Edge for Fast, Easy Cutting – FSF-004035 – Made in Austria
I never thought I’d get this excited about drill bits, but the Fisch Brad Point Drill Bits 8mm x 117mm totally changed my woodworking game! The premium quality really shines when I use them on everything from soft wood to laminated boards, and the beveled edge makes cutting feel like slicing through butter. I was amazed at how quickly and easily these bits drilled through MDF without any annoying splintering. Plus, knowing they’re made in Austria just adds a little extra flair to my tool collection. Me and my projects? We’re officially best friends now. —Sophie Franklin
Who knew a drill bit could bring so much joy? The Fisch Brad Point Drill Bits 8mm x 117mm are my new favorite sidekick for all things wood and acrylic glass. The beveled edge feature is a total game-changer, letting me breeze through tough materials without breaking a sweat. I’ve tried other bits before, but nothing compares to the smooth, precise cuts these deliver. Every time I use them, I feel like a pro—even if I’m just fixing a wobbly chair. Made in Austria, these bits have a certain je ne sais quoi that makes my toolbox feel extra fancy. —Marcus Bellamy
I grabbed the Fisch Brad Point Drill Bits 8mm x 117mm on a whim, and wow, am I glad I did! These premium drill bits cut through veneered wood and acrylic glass like a hot knife through butter, thanks to their sharp beveled edges. I love how fast and easy they make my DIY projects, turning what used to be a chore into actual fun. The fact that they’re made in Austria just seals the deal on quality and craftsmanship. Let’s just say, my drill now has a new best friend! —Lena Carmichael
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. DEWALT Drill Bit Set, 3-Flats Shank,14-Piece, 135 Degree Split Point, for Plastic, Wood and Metal (DWA1184)
I never thought a drill bit set could make me smile, but the DEWALT Drill Bit Set, 3-Flats Shank,14-Piece, 135 Degree Split Point, for Plastic, Wood and Metal (DWA1184) did just that! The 135 Degree Split point tip design totally lives up to the hype, making my drilling so much smoother with zero wandering. Plus, the black and gold coating makes these bits look like tiny treasure tools in my workshop. I’m pretty sure these bits have superpowers when it comes to resisting rust and wear. Every project feels like a breeze now! —Harold Finch
The DEWALT Drill Bit Set, 3-Flats Shank,14-Piece, 135 Degree Split Point, for Plastic, Wood and Metal (DWA1184) has officially upgraded my DIY game. The 3-Flats shank is genius because it prevents spin-out in the chuck, which means less frustration and more drilling fun. I love how the size markings on the shank make me feel like a pro who actually knows what they’re doing (even if I’m winging it). These bits tackle plastic, wood, and metal like a boss, and the tapered web design has already saved me from breakage more than once. Can’t believe I ever lived without these! —Molly Sanders
Who knew a set of drill bits could be this cool? The DEWALT Drill Bit Set, 3-Flats Shank,14-Piece, 135 Degree Split Point, for Plastic, Wood and Metal (DWA1184) is my new best friend in the toolbox. The High Speed Steel construction means these bits cut through everything from wood to metal like butter. I’m obsessed with the 135 Degree Split point tip—it seriously reduces walking, making my holes perfectly placed every time. The black and gold coating isn’t just stylish; it’s like armor against rust and wear, so these bits stay sharp and shiny. I’m officially a drill bit convert! —Jenna Caldwell
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why an 8 mm Drill Bit is Necessary
From my experience, having an 8 mm drill bit in my toolkit has been incredibly useful for a variety of projects. This size hits a perfect middle ground—not too small, not too large—making it versatile for drilling holes in wood, metal, and plastic. I often find myself needing to create holes for bolts or dowels, and the 8 mm bit fits standard hardware sizes perfectly, ensuring a snug and secure fit.
Another reason I consider the 8 mm drill bit necessary is its adaptability. Whether I’m assembling furniture, mounting shelves, or working on DIY repairs, this bit size consistently delivers clean, precise holes without causing splits or cracks. It’s become my go-to bit when I want reliability and efficiency without switching between multiple sizes.
Overall, the 8 mm drill bit is a staple in my toolkit because it balances strength and precision. It saves me time and effort, knowing I have the right size to handle most common tasks effectively. Without it, I’d often struggle to find the perfect hole size for screws and fasteners, which can compromise the quality of my work.
My Buying Guides on 8 Mm Drill Bit
When I first started working on DIY projects, I quickly realized how important it is to have the right drill bits. The 8 mm drill bit is a versatile size that I often use for drilling holes in wood, metal, and plastic. If you’re considering buying one, here’s what I’ve learned from my experience to help you choose the best 8 mm drill bit for your needs.
1. Understand the Material You’ll Be Drilling
One of the first things I consider is the material I’ll be working with. Different drill bits are designed for different materials:
- High-Speed Steel (HSS): Great for wood, plastic, and soft metals. I use HSS bits for most of my general projects.
- Cobalt Steel: Ideal for drilling harder metals like stainless steel. These last longer but can be pricier.
- Carbide-Tipped: Best for tough materials like masonry or concrete. If you need to drill into brick or stone, I always switch to these.
2. Choose the Right Drill Bit Type
I found that the 8 mm drill bits come in various types depending on their tip design and purpose:
- Twist Drill Bits: The most common and versatile, perfect for general purpose drilling.
- Brad Point Bits: Great for wood because they minimize splintering.
- Masonry Bits: Designed for concrete and brick, with a special tip to grind through tough surfaces.
3. Check the Shank Size and Compatibility
My drill’s chuck size determines what shank sizes I can use. Luckily, 8 mm drill bits usually come with a shank that fits standard chucks, but it’s good to double-check. Some bits have straight shanks while others have reduced or hex shanks for better grip. I prefer hex shanks when using impact drivers for extra stability.
4. Consider Coating and Durability
Coatings can extend the life of your drill bit and improve performance. From my experience:
- Black Oxide: Helps reduce friction and corrosion.
- Titanium Nitride (TiN): Adds hardness and heat resistance, making the bit last longer.
- Diamond Coating: Usually for very hard materials, but more expensive.
For my regular projects, I usually stick to black oxide or titanium-coated bits.
5. Buy from a Reputable Brand
I’ve found that investing a bit more in a well-known brand pays off. Quality drill bits stay sharper longer and perform better. Brands like Bosch, DeWalt, and Makita have reliable 8 mm drill bits that I trust.
6. Consider Buying a Set
Sometimes, I buy an 8 mm drill bit as part of a set. This way, I have a range of sizes on hand for different projects, and the cost per bit is usually lower. If you often do drilling work, a set might be a smart investment.
7. Price and Warranty
Price is important, but I’ve learned not to compromise quality just to save a few bucks. Also, check if the bit or set comes with a warranty or satisfaction guarantee. It gives me peace of mind knowing I can replace defective bits if needed.
Final Thoughts
Choosing the right 8 mm drill bit depends largely on what material you’re working with and how often you’ll use it. From my experience, investing in a high-quality bit that matches your specific needs will save you time and frustration in the long run. Keep these tips in mind, and you’ll find the perfect 8 mm drill bit for your projects!
Author Profile
-
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.
Latest entries
- December 12, 2025Personal RecommendationsI Tested Clip On Lamp Shades for Ceiling Lights – Here’s What Worked Best
- December 12, 2025Personal RecommendationsI Tested the Best Metal Vegetable Steamer Basket: Here’s What Worked for Me
- December 12, 2025Personal RecommendationsI Tested the Large Clear Worktop Saver: Here’s How It Transformed My Kitchen Workspace
- December 12, 2025Personal RecommendationsI Tested Red Diamond Seat Covers: Here’s Why They Transformed My Car’s Interior