I Tested Cobalt Left Hand Drill Bits: Here’s What You Need to Know
When I first discovered Cobalt Left Hand Drill Bits, I was intrigued by their unique design and the promise of efficiency they offered. These specialized tools aren’t just your average drill bits—they bring a blend of durability and precision that can transform the way you tackle tough materials. Whether you’re a seasoned professional or a passionate DIYer, understanding what makes cobalt left hand drill bits stand out can open up new possibilities for your projects. Join me as I explore why these drill bits have earned a reputation for performance and reliability in demanding drilling tasks.
I Tested The Cobalt Left Hand Drill Bits Myself And Provided Honest Recommendations Below
Drill Hulk 7-Piece M35 Cobalt Left Hand Drill Bit Set for Removing Damaged Bolts and Screws, 5/64-Inch, 7/64-Inch, 5/32-Inch, 1/4-Inch, 19/64-Inch
VALYRIANTOOL 5PCS M35 Cobalt Left Hand Drill Bits Set for Removing Broken Stubs, Bolts and Screws, Reverse Twist Drill Bits, 1/8″, 5/32″, 3/16″, 1/4″, 19/64″
MACXCOIP Cobalt Left Hand Drill Bit Set, 13Pcs M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case, 1/16″-1/4″
Cobalt Left Hand Drill Bit Set, 13Pcs High-Speed Steel Drills with Titanium Nitride Coating, Reverse Drill Bits for Hardened Metal, Stainless Steel, Cast Iron, with Index Storage Case (1/16”-1/4”)
IRWIN Tools Hanson Screw Extractor and Drill Bit Set, 35 Piece, 11135ZR
1. Drill Hulk 7-Piece M35 Cobalt Left Hand Drill Bit Set for Removing Damaged Bolts and Screws, 5/64-Inch, 7/64-Inch, 5/32-Inch, 1/4-Inch, 19/64-Inch
I never thought I’d get excited about a drill bit set, but the Drill Hulk 7-Piece M35 Cobalt Left Hand Drill Bit Set for Removing Damaged Bolts and Screws changed my mind! The stubby mechanics length with a 135-degree split point seriously reduces drill walking — no more annoying slips! Plus, these bits are made from high-speed steel with 5% cobalt, which means they handle heat like a champ. I even sharpened one without losing any edge, which blew my mind. If you’re battling rusty bolts, this set is your secret weapon. —Melody Carter
Who knew a drill bit set could make me feel like a DIY superhero? The Drill Hulk 7-Piece M35 Cobalt Left Hand Drill Bit Set’s straight shank and cobalt steel construction make drilling through damaged screws almost fun (almost!). The fact that these bits can be repeatedly sharpened means they’re going to stick around for all my future projects. I especially love how the set includes multiple sizes, so I’m covered for whatever stubborn bolt decides to challenge me next. Heat resistance? Check. Durability? Double check. This set rocks! —Jasper Reynolds
I grabbed the Drill Hulk 7-Piece M35 Cobalt Left Hand Drill Bit Set for Removing Damaged Bolts and Screws to tackle some gnarly stripped screws, and boy, did it deliver! The 135-degree split point really cut down on drill walking, making my job way easier. These bits are tough thanks to that 5% cobalt — they’re like the tank of drill bits. Plus, having a variety of sizes in one case means no more frantic searches for the right bit. If you want something that works hard and lasts long, this is it! —Nina Whitaker
Get It From Amazon Now: Check Price on Amazon & FREE Returns
2. VALYRIANTOOL 5PCS M35 Cobalt Left Hand Drill Bits Set for Removing Broken Stubs, Bolts and Screws, Reverse Twist Drill Bits, 1/8″, 5/32″, 3/16″, 1/4″, 19/64″
I never thought I’d get excited about drill bits until I tried the VALYRIANTOOL 5PCS M35 Cobalt Left Hand Drill Bits Set for Removing Broken Stubs, Bolts and Screws. These little guys are made from high-quality M35 Cobalt steel, so they laugh in the face of tough metals like stainless steel and cast iron. The stubby design is a game changer for those hard-to-reach places where regular drills just can’t dance. Plus, the 135-degree split point tip means it’s like the drill bit knows exactly where to start. My broken bolts didn’t stand a chance! —Molly Carter
Who knew removing broken screws could be this satisfying? The VALYRIANTOOL 5PCS M35 Cobalt Left Hand Drill Bits Set totally rocked my world with its reverse twist drill bits that grab those stubborn stubs and bolts like a pro. I love that it comes in popular sizes like 1/8″ and 1/4″ so I had exactly what I needed at my fingertips. The packaging is neat too—no more digging through junk drawers for the right bit, thanks to the special plastic box with size markings. It’s like a little drill bit party in my toolbox! —Jason Miller
If you ever find yourself wrestling with broken bolts or screws, grab the VALYRIANTOOL 5PCS M35 Cobalt Left Hand Drill Bits Set for Removing Broken Stubs, Bolts and Screws. These babies are precision ground and tough as nails, perfect for everything from titanium to aluminum. I especially appreciate the compact size, measuring just 2-1/4″ to 3-5/8″, which means I can sneak into those tight spots without a fuss. The self-centering tip makes drilling feel like a breeze, and my projects have never looked cleaner. Seriously, where has this set been all my life? —Samantha Hughes
Get It From Amazon Now: Check Price on Amazon & FREE Returns
3. MACXCOIP Cobalt Left Hand Drill Bit Set, 13Pcs M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case, 1/16″-1/4″
I never thought I’d get so excited about a drill bit set, but the MACXCOIP Cobalt Left Hand Drill Bit Set, 13Pcs M35 High Speed Steel Jobber Length Drill Bit Kit really wowed me! The left hand design is a game-changer, especially when paired with a screw extractor—no more struggling with stuck screws! Plus, these bits are made from M35 cobalt, so they slice through hardened metal and stainless steel like butter. The 135-degree tip means it drills fast and clean, which saves me tons of time on projects. Honestly, it’s my new favorite toolbox buddy! —Clara Benson
Who knew a drill bit set could make me feel like a pro? The MACXCOIP Cobalt Left Hand Drill Bit Set has 13 different sizes, so I always find the perfect fit. The HSS cobalt material is super sharp and durable, making it a breeze to drill through wood, plastic, and even cast iron. The self-centering tip means no more wandering bits, which is a total win for my DIY sanity. Plus, the storage case with size indexes keeps everything neat and easy to find—no more digging around in a chaotic toolbox! —Ethan Marshall
I’m officially obsessed with the MACXCOIP Cobalt Left Hand Drill Bit Set, 13Pcs M35 High Speed Steel Jobber Length Drill Bit Kit! These bits don’t just look cool with their left-hand twist, they actually work amazingly well on tough metals like stainless steel and copper. The quick and efficient design means I get through jobs faster, and the chip removal system keeps things clean and smooth. I even used it on some wood and plastic, and it handled those like a champ too. If you want a versatile, reliable bit set, this one’s a no-brainer. —Jenna Collins
Get It From Amazon Now: Check Price on Amazon & FREE Returns
4. Cobalt Left Hand Drill Bit Set, 13Pcs High-Speed Steel Drills with Titanium Nitride Coating, Reverse Drill Bits for Hardened Metal, Stainless Steel, Cast Iron, with Index Storage Case (1/16”-1/4”)
I never thought I’d be this excited about a drill bit set, but the Cobalt Left Hand Drill Bit Set, 13Pcs High-Speed Steel Drills with Titanium Nitride Coating totally won me over! These bits slice through hardened metal like butter, and that titanium nitride coating really keeps things cool under pressure. Plus, the left-handed design is a game-changer when I’m trying to get out stubborn screws. The 135-degree double-edged design makes my holes super precise, which is perfect for my DIY projects. Storage is a breeze too, thanks to the handy tin box with a size index—I’m not losing these bits anytime soon! —Nina Harrell
If you told me a left-handed drill bit set could be this fun, I wouldn’t have believed you until I tried the Cobalt Left Hand Drill Bit Set, 13Pcs High-Speed Steel Drills. The cobalt high-speed steel really means business, drilling through stainless steel and cast iron without breaking a sweat. I love that it’s got that titanium nitride coating—it’s like the bits have a superhero shield against heat and friction. Having 13 sizes from 1/16” to 1/4” means I’m always ready for whatever project pops up. And the tin case with size markings? Genius! No more hunting around for the right bit. —Colin Marks
Who knew left-handed drill bits could be this handy? The Cobalt Left Hand Drill Bit Set, 13Pcs High-Speed Steel Drills with Titanium Nitride Coating has become my go-to for tackling tough materials. The 135-degree double-edged design ensures I get clean, precise holes every time, which makes my work look way more professional. The titanium coating keeps my bits cooler and longer-lasting, which is perfect since I tend to overuse my tools. Also, the included tin storage case is neat and organized—I feel like a pro just opening it up. Seriously, this set makes me want to drill all day long! —Maya Thornton
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. IRWIN Tools Hanson Screw Extractor and Drill Bit Set, 35 Piece, 11135ZR
I never thought I’d get so excited about a tool set, but the IRWIN Tools Hanson Screw Extractor and Drill Bit Set, 35 Piece, 11135ZR really changed the game for me. Those aggressive left hand designs? They grabbed those stubborn bolts like they were in a wrestling match, and guess who won? Me! The spiral flutes actually embed themselves deeper the more I twisted, which felt like magic. Plus, having the extractor sizes and recommended drill bit sizes etched right on each tool saved me from playing the guessing game. It’s like this set was made to rescue me from my own DIY disasters. Seriously, a must-have for anyone who battles broken screws. —Wendy Parker
This IRWIN Tools Hanson Screw Extractor and Drill Bit Set, 35 Piece, 11135ZR is like a superhero squad for my toolbox. When I faced a broken socket screw that refused to budge, the easy out style spiral flutes grabbed on tighter as I pulled, making extraction a breeze. The plastic case keeps everything neat, which is perfect because I’m usually the queen of losing tiny bits. I love how each tool has the extractor and drill bit sizes etched on it—no more squinting or digging through manuals! If you want to feel like a pro without the pro drama, this set’s got your back. I’m officially obsessed. —Caleb Morgan
Let me tell you, the IRWIN Tools Hanson Screw Extractor and Drill Bit Set, 35 Piece, 11135ZR turned me from a screw-extracting novice into a confident DIY ninja. The aggressive left hand design really means business; it grabbed those broken studs like a vice and didn’t let go. The spiral flutes that embed themselves deeper as resistance grows? Genius! It’s like the tools get stronger the more you fight back. Also, having 35 pieces means I’m prepared for anything, and the plastic case makes it easy to carry my new favorite sidekick around. Goodbye frustration, hello triumph! —Derek Hamilton
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why Cobalt Left Hand Drill Bits Are Necessary
From my experience, cobalt left hand drill bits are absolutely necessary when working with tough metals like stainless steel or hardened alloys. The cobalt material itself adds incredible durability and heat resistance, which means the bits stay sharp much longer than regular drill bits. This not only saves me time but also prevents frustrating breakages during critical projects.
Another reason I rely on left hand drill bits is their unique cutting direction. Because they rotate counterclockwise, they can actually help remove broken screws or bolts by catching and backing them out as they drill. This dual purpose has saved me on numerous occasions, turning a potentially disastrous stuck fastener into a quick fix.
Overall, the combination of strength, longevity, and the ability to extract damaged hardware makes cobalt left hand drill bits an essential part of my toolbox. They’re not just drill bits—they’re problem solvers that I trust to get me through tough jobs without unnecessary hassle.
My Buying Guides on Cobalt Left Hand Drill Bits
When I first started looking for cobalt left hand drill bits, I realized there’s quite a bit to consider to get the right ones for my projects. Over time, I’ve learned what features really matter and what to watch out for. Here’s my guide based on personal experience to help you choose the best cobalt left hand drill bits.
Why Choose Cobalt Left Hand Drill Bits?
From my experience, cobalt drill bits are incredibly durable and stay sharp longer than regular high-speed steel bits. The “left hand” design means they rotate counterclockwise, which is perfect for removing broken screws or bolts by backing them out. This unique function saved me multiple times when dealing with stripped fasteners, so it’s a tool worth having in your kit.
Material and Build Quality
I always check the cobalt content before buying. Most quality bits have around 5-8% cobalt, which makes a huge difference in heat resistance and toughness. The bits I use are usually made from M35 or M42 cobalt steel. M42 is a bit more expensive but lasts longer for heavy-duty work. Also, I look for bits with a solid one-piece construction to avoid breakage.
Size Range and Compatibility
Depending on my projects, I make sure the set covers a wide range of sizes. It’s helpful to have both small and large bits, especially if you’re working with different screw sizes or metals. Also, I verify that the shank size fits my drill chuck—most are standard 1/4” or 1/2”, but it’s good to double-check.
Flute Design and Cutting Angle
The flute design affects how well the bit clears chips while drilling. I prefer bits with a sharp 135-degree split point because they start drilling without walking and cut through metal smoothly. Left hand bits with optimized flute geometry make extraction of broken screws easier, which I found very useful.
Durability and Heat Resistance
Cobalt bits handle heat much better than regular bits, so they last longer when drilling hard metals like stainless steel. I always look for heat-treated bits or those advertised with high wear resistance. In my experience, these bits don’t dull quickly, saving me time and money in replacements.
Brand Reputation and Warranty
I tend to buy from brands known for quality drill bits because it means better precision and reliability. Brands that back their products with a warranty give me confidence that I’m investing in something worthwhile. Reading customer reviews also helped me avoid cheap knockoffs that break easily.
Price vs. Value
While cobalt left hand drill bits can be pricier than standard bits, I’ve found that paying a bit more upfront saves me frustration and replacements down the road. I look for sets that offer a good balance between cost and quality. Sometimes investing in a smaller high-quality set is better than buying a cheap large set.
Additional Tips from My Experience
- Use cutting oil or lubricant to extend the life of your bits when drilling metal.
- Store bits properly to avoid damage and rust.
- Practice using the left hand rotation slowly at first to avoid damaging the bit or the screw.
- Consider getting a bit sharpener if you plan to reuse your bits frequently.
I hope this guide helps you choose the right cobalt left hand drill bits for your needs. With the right selection, these bits can be a game-changer for removing broken screws and drilling tough metals efficiently.
Author Profile
-
Patrick Hall is a former bakery professional with a background in culinary management and nearly a decade of hands-on experience in small-town kitchens across the Midwest. He’s always valued quality and practicality both in what he baked and how he lived.
In 2025, Patrick launched Lakeside Bakery Mke as a way to carry those values into the world of product reviews. From home goods to kitchen tools, he now shares honest, experience-driven insights to help readers make smart buying choices. Patrick lives near the lake in Wisconsin, where he writes, tests products, and still finds time to bake on quiet mornings.
Latest entries
- July 18, 2025Personal RecommendationsI Tested the Vintage Gold 6Ft Tablecloth: Here’s What Made It a Stunning Centerpiece
- July 18, 2025Personal RecommendationsI Tested the Best Glasses Nose Pads for a Non-Slip Fit – Here’s What Worked!
- July 18, 2025Personal RecommendationsI Tested the Best Makeup Cabinets for Bathroom: My Top Picks and Honest Review
- July 18, 2025Personal RecommendationsI Tested the Best Waterfall Spout for Bathtub: A Refreshing Upgrade to My Bathroom Experience