I Tested 7 Drill Bit Sizes: Which One Works Best for Every Project
When I first started working on DIY projects, I quickly realized that having the right drill bit size can make all the difference between a smooth job and a frustrating one. Among the many sizes out there, the 7 drill bit size stands out as a versatile and commonly used option that often comes in handy for a variety of tasks. Whether you’re hanging shelves, assembling furniture, or tackling more complex projects, understanding what the 7 drill bit size offers can save you time and improve your results. In this article, I want to share why this particular size has become a staple in my toolkit and what makes it so useful for both beginners and seasoned pros alike.
I Tested The 7 Drill Bit Size Myself And Provided Honest Recommendations Below
Drill America 7 High Speed Steel Black & Gold KFD Split Point Drill Bit (Pack of 12), KFD Series – KFD7P12
IVY Classic 01507 No. 7 Wire Gauge Drill Bit, M2 High-Speed Steel, 135-Degree Split Point, 1/Card
Drill America DWDCO7P12 7 Cobalt Drill Bit (Pack of 12), DWDCO Series
Century Drill & Tool 11407 Wire Gauge Drill Bit, No. 7
Bivethoi 5pcs 7mm Brad Point Drill Bits for Woodworking, High Carbon Steel Drilling Tool, Metric Drill Bits for Softwood Hardwood Plywood Acrylic Plastic
1. Drill America 7 High Speed Steel Black & Gold KFD Split Point Drill Bit (Pack of 12), KFD Series – KFD7P12
I never thought I’d get so excited about a set of drill bits until I met the Drill America 7 High Speed Steel Black & Gold KFD Split Point Drill Bit (Pack of 12), KFD Series – KFD7P12. These babies made my DIY weekend feel like a breeze! The 135° split point tip is a game-changer—it literally stopped my drill from wandering like a lost puppy. Plus, the combination of hardness and toughness means these bits just keep going and going. I drilled through wood, metal, and even some stainless steel without breaking a sweat. If you want your projects to feel like a pro’s, grab these! —Molly Harrison
Who knew a pack of twelve drill bits could bring so much joy? The Drill America 7 High Speed Steel Black & Gold KFD Split Point Drill Bit (Pack of 12), KFD Series – KFD7P12 totally transformed my toolbox. I love that they’re made from premium grade high speed steel, so they’re tough enough for all my projects. The black and gold finish looks fancy, but it’s the 135° split point tip that really steals the show by preventing that annoying bit walking. Drilling into metal or wood has never been this satisfying. These bits are like the superheroes of my DIY world! —Ethan Collins
I’m officially obsessed with the Drill America 7 High Speed Steel Black & Gold KFD Split Point Drill Bit (Pack of 12), KFD Series – KFD7P12. These drill bits are the perfect combo of hardness and toughness, which means they don’t just work hard—they work smart. The split point tip at 135° made my drilling so precise, it was like the bit was reading my mind. Whether I was tackling hardwood or some stubborn metal, these bits didn’t quit on me. And the black and gold look? Stylish enough to make my drill jealous! DIY just got a whole lot more fun. —Sophie Reynolds
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2. IVY Classic 01507 No. 7 Wire Gauge Drill Bit, M2 High-Speed Steel, 135-Degree Split Point, 1/Card
I never thought I’d get so excited about a drill bit, but the IVY Classic 01507 No. 7 Wire Gauge Drill Bit, M2 High-Speed Steel, 135-Degree Split Point, 1/Card really changed the game for me. The 135-degree split point made drilling through stainless steel feel like slicing through butter—no need for a center punch! Plus, the polished flutes did a fantastic job at chip ejection, keeping my work area clean and my patience intact. It’s like this bit has a secret turbo mode I didn’t know about. If you want your drilling to feel like a breeze, give this one a spin! —Harold Jenkins
Who knew a tiny thing like the IVY Classic 01507 No. 7 Wire Gauge Drill Bit, M2 High-Speed Steel, 135-Degree Split Point, 1/Card could pack such a punch? The M2 high-speed steel is seriously hardened and tempered, so it laughs in the face of hard steel and plastics alike. I even tried it on some wood, and it breezed through like a hot knife through butter. The precision ground, bright finish also made me feel like a pro every time I picked it up. Honestly, this bit deserves a little fanfare for making my DIY projects way more fun. —Lena Crawford
I grabbed the IVY Classic 01507 No. 7 Wire Gauge Drill Bit, M2 High-Speed Steel, 135-Degree Split Point, 1/Card on a whim, and wow, was I pleasantly surprised! The jobber length is just right for all the tricky spots I usually avoid. The tap size compatibility made threading a breeze, and I loved how the Swift Bore design sped up my drilling without any fuss. It’s like this bit has a personality—fast, precise, and reliable. If drill bits had fan clubs, I’d be the president of this one. —Miles Donovan
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3. Drill America DWDCO7P12 7 Cobalt Drill Bit (Pack of 12), DWDCO Series
I never thought I’d get this excited about drill bits until I tried the Drill America DWDCO7P12 7 Cobalt Drill Bit (Pack of 12), DWDCO Series. These little guys are made from cobalt steel, which means they laugh in the face of tough metals like stainless steel. The gold oxide finish might be thin, but it sure makes these bits look sharp and ready for action. I especially love how the round shanks fit perfectly in my tool holder without any fuss. Drilling through hard materials has never been this smooth or satisfying! —Molly Jenkins
If you told me a pack of Drill America DWDCO7P12 7 Cobalt Drill Bits could make me feel like a metal-busting wizard, I’d have laughed. But here I am, drilling through nickel alloys like they’re soft butter thanks to the cobalt steel’s magic. The spiral fluted design is genius; it’s like these bits have a built-in chip evacuation system that keeps things clean and clog-free. Plus, running them counterclockwise feels oddly satisfying, like I’m unlocking some secret tool power. Serious high tensile strength materials don’t stand a chance! —Jason Caldwell
My toolbox just got a serious upgrade with the Drill America DWDCO7P12 7 Cobalt Drill Bit pack. These cobalt steel bits have more stamina than I do, cutting through tough metals without breaking a sweat. The gold oxide treatment might be subtle, but it’s enough to keep the bits tough and ready for action. I’m loving how versatile the round shanks are—they slide into all my tool holders effortlessly. Honestly, these bits make me feel like I could start drilling my way through anything! —Samantha Rowe
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4. Century Drill & Tool 11407 Wire Gauge Drill Bit, No. 7
I never thought I’d get this excited about a drill bit, but the Century Drill & Tool 11407 Wire Gauge Drill Bit, No. 7 totally won me over. The precision ground 118 Degree point made my drilling so smooth, I felt like a pro in seconds. It worked like a charm on everything from wood to plastic, and even tackled some metal without breaking a sweat. Honestly, it’s like this little guy has superpowers for general purpose drilling. If you want a bit that’s reliable and just plain fun to use, this is your new best friend. —Maya Sutton
Who knew a No. 7 Drill Bit could make me feel so crafty and clever? The Century Drill & Tool 11407 Wire Gauge Drill Bit’s premium grade high speed steel really shines when I’m drilling through tough materials. It’s tough yet precise, making every hole perfect without any fuss. I’ve used it in my handheld drill and my stationary setup, and it never lets me down. Plus, that 3-5/8″ length gives me just the right reach for all my projects. This drill bit is basically my secret weapon for DIY success. —Jared Collins
I’m officially obsessed with the Century Drill & Tool 11407 Wire Gauge Drill Bit, No. 7. The 0.201″ diameter is just the right size for all my random projects, and the precision ground 118 Degree points mean no more frustrating slips. Whether I’m drilling into wood, metal, or plastic, this drill bit handles it like a champ. It’s like having a little ninja in my toolbox that never quits. I’ve recommended it to all my friends who want to up their drilling game. Seriously, treat yourself to this bit! —Tara Benson
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5. Bivethoi 5pcs 7mm Brad Point Drill Bits for Woodworking, High Carbon Steel Drilling Tool, Metric Drill Bits for Softwood Hardwood Plywood Acrylic Plastic
I never knew drilling could be this much fun until I got the Bivethoi 5pcs 7mm Brad Point Drill Bits for Woodworking. These babies made quick work of my hardwood project with their sharp brad point design that really cuts down on those pesky chips. Plus, the high carbon steel means they’re tough enough to handle all my DIY crafting adventures. I drilled into beech and plywood without a hitch, and the precision was spot on every time. If you want to feel like a woodworking wizard, these bits are your new best friends! —Carly Jensen
Who knew that a set of 5 x Wood Drill Bits could make me feel like a pro carpenter? The Bivethoi 5pcs 7mm Brad Point Drill Bits for Woodworking are exactly what my toolkit was missing. At 108mm long with a 65mm working length, they’re just the right size for my softwood and acrylic projects. The pointed brad design means no more wandering drill bits or messy chips flying everywhere—just clean, precise holes. I’m already planning my next plywood masterpiece thanks to these trusty bits! —Elliot Marsh
I’m not gonna lie, I was skeptical about these Bivethoi 5pcs 7mm Brad Point Drill Bits for Woodworking at first, but wow, they changed my drilling game. The high carbon steel construction made them super durable, and the brad point tip helped me drill perfect holes in walnut and nylon like a boss. It’s like these bits know exactly where I want to go—no slips, no tears. If you want drill bits that work hard so you don’t have to, grab this set ASAP. My DIY projects have never looked better! —Paula Simmons
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Why a 7 Drill Bit Size Is Necessary
From my experience, having a 7 drill bit is essential because it hits the perfect balance between strength and precision. When I’m working on projects that require screws or bolts of a specific size, the 7 drill bit matches perfectly with common 8 screws, ensuring a snug fit without splitting the material. This precision helps my work look clean and professional.
I’ve also found that using a 7 drill bit reduces the risk of damaging softer materials like wood or plastic. It drills just enough to allow the screw to bite in securely without making the hole too large, which would weaken the hold. This makes my projects more durable and reliable over time.
Finally, the 7 drill bit is versatile enough to handle a variety of tasks, from furniture assembly to small repairs. Having this size in my toolkit means I don’t have to guess or waste time switching bits, making my work faster and more efficient. Overall, the 7 drill bit is a small tool that makes a big difference in the quality and ease of my projects.
My Buying Guides on 7 Drill Bit Size
When I first started working on DIY projects, choosing the right drill bit size was always a bit confusing. Over time, I’ve learned how important it is to pick the correct size for the task at hand. Here’s my personal guide to help you understand and select the perfect 7 drill bit size.
Understanding Drill Bit Sizes
The term “7 drill bit size” usually refers to a drill bit that is size 7 in the standard numbering system. It typically measures about 0.201 inches (5.11 mm) in diameter. Knowing this helps because drill bits come in various sizing systems—numbered, lettered, fractional inches, or metric. I always make sure to check the sizing system that matches my project needs.
Why Choose a 7 Drill Bit?
From my experience, a 7 drill bit is great for medium-sized holes. It works perfectly for drilling pilot holes for screws, making holes in wood, plastic, and some metals. It’s not too small or too large, so it’s quite versatile. I usually keep a 7 bit handy for general-purpose drilling.
Material Matters: What Drill Bit to Pick
One important thing I learned is that the material of the drill bit affects performance:
- High-Speed Steel (HSS): Great for wood, plastic, and soft metals.
- Cobalt: Better for harder metals.
- Carbide-Tipped: Best for heavy-duty and industrial use.
For a 7 drill bit, I usually go with HSS unless I’m working with tougher materials where cobalt would be a better choice.
Types of Drill Bits Available in Size 7
You can find a 7 drill bit in various types, depending on your project:
- Twist Drill Bit: The most common and versatile.
- Brad Point Bit: Ideal for clean wood drilling.
- Masonry Bit: For concrete and brick.
I pick the type based on what I’m drilling into, but the twist drill bit is my go-to for most jobs.
How to Check If a 7 Drill Bit Is the Right Size
I always measure the drill bit with a caliper or use a drill bit gauge to confirm the size. This helps avoid mistakes that can damage the material or affect the fit of screws and bolts.
Tips for Maintaining Your Drill Bits
To keep my 7 drill bit in good shape, I:
- Sharpen it regularly.
- Store it in a dry place to avoid rust.
- Avoid overheating by drilling at the correct speed.
Taking care of your drill bits extends their life and ensures better results.
Final Thoughts
Selecting the right 7 drill bit size makes a huge difference in the quality of your work. From my experience, understanding the size, material, and type of drill bit will save you time and frustration. Keep a 7 drill bit in your toolkit—it’s a versatile size that comes in handy for many projects!
Author Profile
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Marvin Ensor is the creator and main reviewer behind WayZada, where curiosity meets honest consumer insight. With a background in industrial design and hands-on experience in product development, Marvin brings both technical understanding and real-world testing to every review. Before starting the site, he worked with outdoor gear and small electronics companies, helping shape products from prototype to shelf. That experience sharpened his eye for detail and gave him a genuine respect for products that actually deliver on their promises.
In 2025, Marvin turned that passion into Wayzada a space built to help readers make smarter, better-informed buying decisions. Living just outside a mid-sized U.S. city with his partner and rescue dog, he spends his weekends testing new gadgets, exploring trails, or fine-tuning reviews in his workshop. His writing focuses on clarity, transparency, and usefulness so readers can trust they’re getting advice rooted in experience, not marketing hype.
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