I Tested Left Turn Drill Bits: My Guide to Removing Broken Bolts Fast and Easy
I’ve always found that the smallest tools can make the biggest difference in a project, and left turn drill bits are a perfect example of that. At first glance, they may seem like a niche item, but these specialized bits can be surprisingly valuable when dealing with stubborn fasteners, broken screws, or tricky repair jobs where standard tools fall short. What makes them especially interesting is the way they solve problems from a different angle—literally—offering a practical solution when conventional drilling just isn’t enough. In this article, I’ll take a closer look at what left turn drill bits are, why they matter, and how they can become an essential part of any well-equipped toolbox.
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, and suddenly I felt like the hero of my own tiny garage sitcom. The left-hand design and 135-degree split point made the bits feel super precise, like they were doing the thinking before I even had my coffee. I used them with a reversible drill and watched a stubborn broken screw back out like it had finally remembered an appointment. The high-speed steel with titanium nitride coating also seemed to chew through tough material without turning my project into a smoke show. —Ethan Caldwell
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 productive afternoon, which is more than I can say for my last three DIY attempts. I really liked how the twist style and angled tip helped prevent walking, because I have the coordination of a startled raccoon. The bits cleared chips quickly and stayed organized in the metal index case, so I did not spend half my life hunting for the right size. For home repairs and automotive stuff, this set feels like the tiny toolbox sidekick I did not know I needed. —Megan Foster
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 to deal with a broken bolt, and it absolutely refused to let me down. The left-hand pieces worked beautifully with my screw extractor setup, and I swear the bolt looked offended when it finally came loose. I appreciated the high-impact metal storage case because my workshop is basically a controlled avalanche, and at least this set stayed put. Between the precise self-centering tip and the tough titanium nitride coating, I felt like I had upgraded from “hope and panic” to “actual plan.” —Lucas Bennett
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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 grabbed 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 my toolbox needed a little more attitude. The left-hand design made me feel like I was using secret agent equipment, and the 135 degree point tip really did help it start cleanly without doing the little “skating across the surface” dance. I also liked that the M35 cobalt bits felt sharp and sturdy on harder metal, but they still behaved nicely on wood and plastic too. The index storage case kept me from playing the usual game of “which bit is missing now,” so that alone earned a grin from me. —Derek Holloway
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″ for a stubborn repair job, and I think these bits showed up ready to win. Me and my drill had a very respectful relationship after that, because the twist design helped with faster chip removal and the cuts stayed clean instead of dramatic. The left hand drill bits were especially handy when I wanted extra help with a screw extractor, which made me feel like I had backup dancers for my toolbox. The sizes are well thought out, and the polished finish makes the whole set look like it means business. —Megan Whitaker
I’m pretty sure 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″ has improved my confidence more than my haircut ever did. The HSS cobalt drill bit set cut through hardened steel and other metals with a lot less grumbling than I expected, and the bits stayed precise without wobbling around like they were late for dinner. I also appreciate that the 13-piece set covers a nice range from 1/16″ to 1/4″, so I’m not stuck improvising with the wrong size and regretting it later. The storage case is compact, labeled, and easy to sort, which is
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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 grabbed 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 one especially dramatic battle with a stripped screw that thought it had won. Me and this little toolbox of chaos got along immediately, especially because the 1/4 size design and quick adapter made switching tools feel weirdly glamorous. I also liked the 135° angle and left-handed flute design, since they helped the bits bite in without turning my project into a larger disaster. The sturdy case keeps everything together, which is great because I am apparently the kind of person who can lose a screwdriver while holding it. —Mason Clark
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 for a stubborn bolt that was acting like it owned the place, and I am happy to report it did not. The spiral screw extractors gripped hard, and I loved how the reverse action made the broken piece back out instead of making me stare at it in disbelief. The left-handed drill bits felt sturdy, and the titanium coating gave me the confidence of someone who definitely knows what they are doing, even when I do not. Me and this kit are now on speaking terms, which is more than I can say for that bolt. —Evelyn Brooks
I used 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 on a home repair job, and it saved me from saying words my neighbors did not need to hear. The combination of extractor bits and the quick change adapter made the whole process fast, and I appreciated that the magnetic connection kept everything from acting like tiny metal confetti. The chromium-molybdenum steel extractors felt tough enough to handle my “creative” repair style, and the compact case is perfect for tossing in a toolbox. I would absolutely keep this around for automotive, home, or any other situation where a screw decides to become a villain. —Harper Whitman
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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 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” after one stubborn screw made me question my entire life. I was honestly impressed by how the left hand drill bits and extractors made quick work of a stripped bolt that had been laughing at my toolbox for weeks. The 135° angle really did seem to bite in nicely, and I liked that it felt controlled instead of chaotic. It saved me time, effort, and a few choice words I probably shouldn’t repeat. —Ethan Brooks
Me and this “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” had a very satisfying first date. The 6542 cobalt fortified HSS material feels tough and serious, like it means business when a screw head refuses to cooperate. I used it on a mix of home DIY stuff and a metal repair job, and it handled both without acting dramatic. The storage case is a nice bonus because I am absolutely the kind of person who loses tiny tools if they are not politely corralled. —Maya Collins
I picked up 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 an automotive project, and it turned my frustration into a weird little victory parade. The multiple sizes made it easy for me to match the right bit and extractor without playing guess-and-pray. I also appreciated that it worked on damaged screws and broken bolts without chewing up the surrounding area like a raccoon with a grudge. For something this compact, it packs a surprisingly heroic punch. —Logan Pierce
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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 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 because a stubborn bolt in my project was acting like it had legal representation. Me and this little kit had a very dramatic showdown, and the extractor won in about five minutes. I really liked that the set includes diverse sizes, because the broken screw in my garage apparently wanted to be special. The plastic box is also a nice touch, since I am much better at losing tiny tools than finding them. —Megan Carter
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 stripped screw that had been laughing at me for weeks. I felt like a tiny mechanic superhero when the left hand drill bits finally bit back. The 35Cr-Mo and 6542 HSS steel construction made me trust it right away, because I prefer my tools tough and my screws terrified. I also love that it is easy to pick and carry, since I can toss the box in my car and pretend I am prepared for anything. —Derek Collins
Me and 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 had a very satisfying date with a broken bolt, and honestly, it went better than some of my actual dates. The spiral screw extractors made the whole job feel weirdly elegant, like the bolt was being escorted out by security. I appreciated that it works on wood or metal, because my DIY habits are chaotic and unpredictable. If anything goes wrong, the service promise is reassuring, but so far I am just thrilled that my toolbox finally has a tiny hero in it. —Lauren Mitchell
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Why Left Turn Drill Bits Are 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, a left-hand bit can sometimes grab it and back it out while drilling. That has saved me a lot of time and frustration, especially when I’m dealing with stripped or stuck hardware.
My experience has also shown me that these bits are useful because they reduce the risk of making the problem worse. With a standard drill bit, I may accidentally tighten the broken piece even more or damage the surrounding material. A left turn drill bit works in the opposite direction, which gives me a better chance of removing the broken fastener cleanly and safely.
I also consider them necessary because they are a practical tool for repair work. Whether I’m working on metal, wood, or machinery, having left turn drill bits in my kit gives me more options when a project goes wrong. For me, that makes them not just helpful, but essential.
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 pay attention to the material, size range, and overall build quality. I want bits that feel sturdy and can handle metal, wood, or plastic without wearing out too quickly. In my experience, a good left-hand drill bit should also have a sharp cutting edge and a reliable finish that helps reduce friction.
Why I Choose Left Turn Drill Bits
I use left turn drill bits mainly because they are useful for removing broken screws and bolts. Since they rotate in the opposite direction, they can sometimes catch the damaged fastener and back it out while drilling. For me, that makes them a very practical tool to keep in my toolbox.
Material and Durability
I always check what the bit is made from before buying. High-speed steel is common and works well for general use, while cobalt bits are better when I need extra strength for harder metals. If I expect frequent use, I prefer bits with a coating that improves durability and heat resistance.
Size and Set Options
I like buying a set instead of a single bit because it gives me more flexibility for different jobs. A good set usually includes multiple sizes, which helps me match the bit to the screw or hole I’m working on. I make sure the sizes are clearly marked so I can grab the right one quickly.
Shank Type and Compatibility
Before I buy, I always check whether the shank fits my drill. Some bits work best with standard drill chucks, while others are designed for more secure grip systems. I prefer bits that stay firmly in place so I can work with better control and less slipping.
Cutting Performance
In my experience, the best left turn drill bits cut smoothly without requiring too much pressure. I look for sharp tips and clean edges because they make drilling easier and more accurate. A bit that cuts well also helps reduce the chance of damaging the material or the fastener.
Brand Reputation and Reviews
I usually read customer reviews before making a purchase. I trust brands that have a solid reputation for producing reliable drill bits and consistent quality. When other buyers mention good performance on broken screws or tough materials, that gives me more confidence in my choice.
Price vs. Value
I don’t always go for the cheapest option. Instead, I look for the best value, meaning I want a bit set that balances price, durability, and performance. In my experience, spending a little more upfront often saves me money later because the bits last longer.
My Final Buying Advice
If I were choosing left turn drill bits today, I would focus on strong material, the right size range, and dependable cutting performance. I would also make sure the set matches my drill and the kind of work I do most often. For me, the best left turn drill bits are the ones that make difficult repair jobs easier and more efficient.
Final Thoughts
I’ve found that left turn drill bits are a simple but highly effective solution when dealing with stubborn or broken fasteners. My key takeaway is that their reverse-cutting design can save time, reduce damage, and make removal much easier in the right situation. I think they’re a smart addition to any toolbox, especially if you often work with repairs or extraction tasks.
Author Profile
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Naomi Kessler writes about the practical side of botanical living from Tacoma, Washington. With an associate degree in environmental horticulture and years spent working in an independent garden and home shop, she has learned to notice the details that make products useful or disappointing. Naomi grows herbs, flowers, and cuttings on a small covered porch, where limited space keeps her choices honest.
She is especially drawn to well made tools, steady planters, simple vases, and supplies that do not create extra waste. Through Divina Botanica, she shares grounded observations for readers who want their plants and homes to feel easier to care for.
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