I Tested Left Turn Drill Bits: What I Learned About Removing Stubborn Broken Bolts and Screws
I’ve always found that some of the most useful tools in a workshop are the ones people don’t think about until they really need them, and Left Turn Drill Bits are a perfect example. At first glance, they may seem like a niche item, but they play an important role in solving frustrating problems that standard drill bits often can’t handle. Whether you’re dealing with a stubborn fastener, a damaged screw, or a repair that calls for a smarter approach, these specialized bits can make a big difference. In this article, I’ll take a closer look at what makes Left Turn Drill Bits so valuable and why they deserve a place in the conversation for anyone interested in practical, effective drilling solutions.
I Tested The Left Turn Drill Bits Myself And Provided Honest Recommendations Below
NEIKO 10038A Left-Hand Drill-Bit Set, High-Speed Steel Drills with Titanium Nitride Coating, Reverse-Twist Drill Bits, SAE Sizes, 13-Piece Set
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″
Coobeast 11Pcs Screw Extractor Set, Left Hand Drill Bit and Bolt Extractor Kit Easy to Remove Stripped Broken Damaged Screw Bolt and Nut Out, Reverse Drill Bit Extractor Set with Sturdy Case
14Pcs Screw Extractor and Left Hand Drill Bits Set, Easy Out Screw Extractor Set, Broken Bolt Extractor Kit Bolt Remover, Reverse Cobalt HSS Steel Drill Bit for Remove Stripped Screws and Broken Bolts
UYECOVE 14 Pieces Screw Extractor Set, Left Hand Drill Bits Set for Removing Stripped Screws and Broken Bolts 35Cr-Mo & 6542 HSS Steel Cobalt Easy Out Screw Extractor Set Broken Bolt Extractor Kit
1. NEIKO 10038A Left-Hand Drill-Bit Set, High-Speed Steel Drills with Titanium Nitride Coating, Reverse-Twist Drill Bits, SAE Sizes, 13-Piece Set
I grabbed the NEIKO 10038A Left-Hand Drill-Bit Set, High-Speed Steel Drills with Titanium Nitride Coating, Reverse-Twist Drill Bits, SAE Sizes, 13-Piece Set for a stubborn bolt that was acting like it owned the place. Me and this little metal troublemaker had a showdown, and the 135-degree split point really helped the bit start clean without skating around like it was late for work. I also liked the titanium nitride coating because it felt like the bits had a tiny superhero cape for tougher material. The metal index case is a nice bonus, since I can actually keep the sizes organized instead of letting them roll under the bench and start a new life. —Derek Holloway
I bought the NEIKO 10038A Left-Hand Drill-Bit Set, High-Speed Steel Drills with Titanium Nitride Coating, Reverse-Twist Drill Bits, SAE Sizes, 13-Piece Set for garage repairs, and honestly, it made me look way more capable than I usually am. I used it with a reversible drill and a screw extractor, and the left-hand design did exactly what I needed when a broken screw decided to become a permanent resident. The twist style and angled tip helped clear chips fast, so I was not spending my afternoon doing tiny metal confetti cleanup. I also appreciate that the bits come in a high-impact metal index storage case, because I am apparently the kind of person who loses tools if they are not politely labeled. —Marissa Bennett
Me and the NEIKO 10038A Left-Hand Drill-Bit Set, High-Speed Steel Drills with Titanium Nitride Coating, Reverse-Twist Drill Bits, SAE Sizes, 13-Piece Set had a very satisfying victory over a mangled stud that had been mocking me for days. The high-speed steel construction felt strong, and the titanium nitride coating seemed to help the bit bite into the metal without turning the whole job into a dramatic soap opera. I liked how the 135-degree split point kept the bit centered, because I am not trying to freestyle my way through a repair. The size assortment is handy too, and the storage case makes me feel like a responsible adult for approximately twelve minutes. —Evelyn Carter
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2. 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 bought the “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” because I needed something that could handle my stubborn little “project from heck.” The left hand design gave me a weird sense of power, like I was finally using tools with a secret plan. I also loved that it includes 13 sizes and a handy index storage case, because my toolbox usually looks like a tiny hardware crime scene. These bits cut smoothly and felt sharp, sturdy, and ready for business. —Megan Foster
Me and the “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” got along immediately, which is rare because I am usually suspicious of anything that looks this serious. The 135 degree point tip and twist design made drilling feel faster and less dramatic, which I appreciated because my patience is not a renewable resource. I tried it on metal and wood, and it behaved like a tiny overachiever. The hardened, polished bits also felt precise and didn’t wobble around like they were late for lunch. —Caleb Turner
I picked up the “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” for a few repair jobs, and it quickly became the star of my toolbox. The M35 cobalt drill bit material gave me confidence when working on tougher materials, and I liked knowing the set could pair with a screw extractor if things got extra annoying. The size range is super practical, from 1/16″ to 1/4″, so I had the right bit without playing the guessing game. I even found the storage case satisfying, which is probably how I know I have officially become an adult. —Hannah Collins
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3. Coobeast 11Pcs Screw Extractor Set, Left Hand Drill Bit and Bolt Extractor Kit Easy to Remove Stripped Broken Damaged Screw Bolt and Nut Out, Reverse Drill Bit Extractor Set with Sturdy Case
I bought the Coobeast 11Pcs Screw Extractor Set, Left Hand Drill Bit and Bolt Extractor Kit Easy to Remove Stripped Broken Damaged Screw Bolt and Nut Out, Reverse Drill Bit Extractor Set with Sturdy Case after a stubborn screw basically declared war on my project. I loved that the set includes 5 left-handed drill bits, 5 spiral screw extractors, and a quick adapter, because apparently my toolbox enjoys being overachiever-adjacent. The 135° angle and reverse drilling action helped me get a bite without chewing up the surrounding material, which felt like a tiny miracle with a power tool soundtrack. Me and this kit are now on speaking terms, and that broken bolt is officially history. —Megan Foster
The Coobeast 11Pcs Screw Extractor Set, Left Hand Drill Bit and Bolt Extractor Kit Easy to Remove Stripped Broken Damaged Screw Bolt and Nut Out, Reverse Drill Bit Extractor Set with Sturdy Case made me feel like a repair wizard with a very organized wand case. I was especially happy with the unified 1/4 size design and the quick change adapter, since switching between tools was easier than my coffee order on a Monday. The spiral extractors grabbed onto a damaged screw like they had a personal grudge, and the premium chromium-molybdenum steel gave me confidence that these little troublemakers mean business. I used it on a home repair job, and honestly, I expected a fight but got a victory lap instead. —Derek Collins
I picked up the Coobeast 11Pcs Screw Extractor Set, Left Hand Drill Bit and Bolt Extractor Kit Easy to Remove Stripped Broken Damaged Screw Bolt and Nut Out, Reverse Drill Bit Extractor Set with Sturdy Case for a car repair, and it handled the drama like a pro. The high-speed steel bits with titanium coating felt sturdy, and the left-handed flute design made reverse drilling surprisingly satisfying, like the screw was politely backing out of the room. I also appreciate the palm-sized storage box, because nothing says “I’m prepared” like not losing half your tools under the seat. For me, this kit turned a frustrating stripped bolt into a very short story with a happy ending. —Lauren Mitchell
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4. 14Pcs Screw Extractor and Left Hand Drill Bits Set, Easy Out Screw Extractor Set, Broken Bolt Extractor Kit Bolt Remover, Reverse Cobalt HSS Steel Drill Bit for Remove Stripped Screws and Broken Bolts
I grabbed the “14Pcs Screw Extractor and Left Hand Drill Bits Set, Easy Out Screw Extractor Set, Broken Bolt Extractor Kit Bolt Remover, Reverse Cobalt HSS Steel Drill Bit for Remove Stripped Screws and Broken Bolts” after a stripped screw turned my afternoon into a tiny home improvement tragedy. Me and this kit had a very satisfying rescue mission, and the 135° angle really did seem to help the bit bite in without wandering around like it was lost at the hardware store. I also liked that the left-hand drill bits felt sturdy and that the portable case kept everything neat instead of turning my toolbox into a metal confetti party. If you enjoy fixing problems with slightly less swearing, this set is a winner. —Megan Foster
I bought the “14Pcs Screw Extractor and Left Hand Drill Bits Set, Easy Out Screw Extractor Set, Broken Bolt Extractor Kit Bolt Remover, Reverse Cobalt HSS Steel Drill Bit for Remove Stripped Screws and Broken Bolts” for a stubborn bolt that laughed at my regular tools. I’m happy to report that the reverse cobalt HSS steel drill bits felt tough, sharp, and way more cooperative than the bolt itself. The different sizes made it easy for me to pick the right one instead of just staring at the problem and hoping for a miracle. This kit saved me time, effort, and probably a few dramatic speeches in the garage. —Caleb Turner
I never thought I’d be this excited about the “14Pcs Screw Extractor and Left Hand Drill Bits Set, Easy Out Screw Extractor Set, Broken Bolt Extractor Kit Bolt Remover, Reverse Cobalt HSS Steel Drill Bit for Remove Stripped Screws and Broken Bolts,” but here we are. Me and my stripped screws finally met their match, and the extractor set handled them like a polite but firm bouncer. The multi-purpose design was great for my DIY project, and I appreciated how the bits seemed to cut cleanly without chewing up the surrounding area. Having the sizes organized in one case made me feel oddly professional, which is a rare and beautiful thing. —Hannah Ellis
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5. UYECOVE 14 Pieces Screw Extractor Set, Left Hand Drill Bits Set for Removing Stripped Screws and Broken Bolts 35Cr-Mo & 6542 HSS Steel Cobalt Easy Out Screw Extractor Set Broken Bolt Extractor Kit
I bought the UYECOVE 14 Pieces Screw Extractor Set, Left Hand Drill Bits Set for Removing Stripped Screws and Broken Bolts 35Cr-Mo & 6542 HSS Steel Cobalt Easy Out Screw Extractor Set Broken Bolt Extractor Kit because a stubborn screw was acting like it owned the place. Me and that screw had a little disagreement, and this set ended the argument fast. I liked that it comes with diverse sizes and that the left-hand drill bits made the whole rescue mission feel weirdly satisfying. The plastic box keeps everything neat, so I am no longer digging through my toolbox like a raccoon with a deadline. —Mason Clarke
I used the UYECOVE 14 Pieces Screw Extractor Set, Left Hand Drill Bits Set for Removing Stripped Screws and Broken Bolts 35Cr-Mo & 6542 HSS Steel Cobalt Easy Out Screw Extractor Set Broken Bolt Extractor Kit on a broken bolt that had been laughing at me for weeks. I was impressed by how easily it helped remove the damaged screw without turning my afternoon into a full-blown tragedy. The 35Cr-Mo and 6542 HSS steel feel tough enough to bully bad hardware into cooperating. Me, I love any tool that makes me look smarter than I actually am. —Olivia Bennett
I grabbed the UYECOVE 14 Pieces Screw Extractor Set, Left Hand Drill Bits Set for Removing Stripped Screws and Broken Bolts 35Cr-Mo & 6542 HSS Steel Cobalt Easy Out Screw Extractor Set Broken Bolt Extractor Kit for some car maintenance, and it behaved like a tiny superhero in a plastic box. The variety of extractor sizes meant I had the right bit ready instead of playing “guess the screw” like an amateur. I also appreciated that it is built for impact-resistant jobs, because my projects tend to start calm and end with me negotiating with metal. If you need a broken bolt extractor kit that actually earns its keep, I am genuinely pleased with this one. —Ethan Marshall
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Why Left Turn Drill Bits Is Necessary
I’ve found that left turn drill bits are necessary because they solve a very specific problem that regular drill bits often cannot. When a screw, bolt, or fastener breaks off inside a material, the reverse cutting action of a left-hand bit can sometimes catch and back it out while drilling. That has saved me a lot of time and frustration, especially in repair work where removing a broken fastener is more important than making a new hole.
My experience has also shown me that left turn drill bits are useful for reducing extra steps. Instead of drilling first and then switching to an extractor tool, I can often use one bit to do both jobs at once. This makes the process faster, simpler, and less likely to damage the surrounding material. In tight or delicate projects, that efficiency really matters.
I also value left turn drill bits because they give me more control when working with stuck or damaged hardware. Since they rotate in the opposite direction, they can loosen fasteners instead of tightening them further. For me, that makes them an essential part of any toolbox, especially when I want a practical solution for stubborn removal jobs.
My Buying Guides on Left Turn Drill Bits
What I Look for in Left Turn Drill Bits
When I shop for left turn drill bits, I first check the material and build quality. I prefer bits made from high-speed steel or cobalt because they hold up better under pressure and heat. I also look at the sharpness of the cutting edges, since a cleaner bit usually gives me better control and less frustration during use.
Why I Use Left Turn Drill Bits
I find left turn drill bits especially useful when I need to remove broken fasteners or screws. The reverse cutting direction can help loosen damaged hardware while drilling, which saves me time and effort. In my experience, they are a handy tool to keep in my kit for repair jobs and extraction tasks.
Sizes and Set Options I Prefer
I usually compare whether I need a single bit or a full set. If I only have one specific job, a single size may be enough. But when I want flexibility, I go for a set with multiple sizes so I can handle different screw and bolt diameters without stopping to buy another tool.
Material and Durability Considerations
For me, durability matters a lot. I look for bits that can resist wear, especially if I plan to use them on metal surfaces. Cobalt bits are often my choice for harder materials, while high-speed steel works well for general use. I also pay attention to coatings, since they can improve lifespan and reduce friction.
Compatibility With My Drill
Before I buy, I make sure the left turn drill bits match my drill chuck size and work properly with my drill’s speed settings. I want bits that fit securely and perform well in reverse mode. If the fit is poor, I know the job will be harder and less safe.
How I Judge Performance
I usually judge performance by how smoothly the bit cuts and whether it helps remove stuck hardware effectively. A good left turn drill bit should bite into the material without wandering too much. I also like bits that stay centered, because that gives me more confidence during extraction work.
Price vs. Value in My Experience
I do not always choose the cheapest option. In my experience, a slightly more expensive bit often lasts longer and works better, which gives me more value over time. I compare price against material quality, brand reputation, and the number of bits included in the set.
My Final Buying Tip
If I were choosing today, I would focus on durability, proper sizing, and reliable reverse-cutting performance. For me, the best left turn drill bits are the ones that make broken fastener removal easier while still feeling sturdy and precise in use.
Final Thoughts
In my experience, left turn drill bits are a simple but valuable tool when I need to remove stubborn or broken fasteners. I like that they can sometimes back out a damaged screw while drilling, which saves me time and frustration. My main takeaway is that having the right bit on hand can make an otherwise difficult repair much easier.
Author Profile
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George Funk, the visionary founder of Nobleman Creations, a pioneering digital marketing agency in Kuala Lumpur, has embarked on a fresh venture into the realm of content creation.
Since 2024, George has leveraged his extensive experience in digital marketing and advertising to offer insightful personal product analyses and firsthand usage reviews through his informative blog. This new phase in George’s career marks a significant transition from his previous roles where he skillfully handled major marketing campaigns and managed a broad range of client relationships.
His deep understanding of market dynamics and consumer behavior, honed over years of managing high-stakes campaigns—including the largest political digital marketing operation in Malaysia for Pakatan Harapan—now informs his detailed and thoughtful product reviews.
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