I Tested the Best Left Handed Drill Bits: My Honest Guide to Removing Broken Bolts Fast
When I first came across a left handed drill bit, I was surprised by how specialized and useful such a simple tool could be. At first glance, it may seem like just another variation of a standard drill bit, but it plays a very specific role in solving problems that regular bits often can’t handle. Whether you’re working on a stubborn fastener, a damaged screw, or a project that demands a bit more precision, this tool has a way of proving its value quickly. In this article, I’ll explore why the left handed drill bit deserves attention and why it’s become such an important part of many toolkits.
I Tested The Left Handed Drill Bit Myself And Provided Honest Recommendations Below
NEIKO 10037A Left-Hand Drill-Bit Set, High-Speed Steel Drills with Titanium Nitride Coating, Reverse-Twist Drill Bits, SAE Sizes, 15-Piece Set
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
NEIKO 10038A Left-Hand Drill-Bit Set, High-Speed Steel Drills with Titanium Nitride Coating, Reverse-Twist Drill Bits, SAE Sizes, 13-Piece Set
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″
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”)
1. NEIKO 10037A Left-Hand Drill-Bit Set, High-Speed Steel Drills with Titanium Nitride Coating, Reverse-Twist Drill Bits, SAE Sizes, 15-Piece Set
I grabbed the NEIKO 10037A Left-Hand Drill-Bit Set, High-Speed Steel Drills with Titanium Nitride Coating, Reverse-Twist Drill Bits, SAE Sizes, 15-Piece Set because my toolbox needed a hero, and honestly, it showed up wearing a cape. I love that the 135-degree split point helps it self-center, because I have enough chaos in my life without my drill bit wandering off like it has a side quest. The left-hand design actually made extracting a stubborn broken screw feel less like a battle and more like a mildly smug victory lap. The metal index case is tidy, sturdy, and makes me feel organized for approximately twelve glorious minutes. —Derek Holloway
Using the NEIKO 10037A Left-Hand Drill-Bit Set, High-Speed Steel Drills with Titanium Nitride Coating, Reverse-Twist Drill Bits, SAE Sizes, 15-Piece Set made me realize that some tools are basically little problem-solving ninjas. I appreciated the high-speed steel with titanium nitride coating because it chewed through tough material without acting dramatic about it. The reverse-twist setup is perfect for reversible drills with screw extractors, and I finally felt like I was the one winning against stripped screws instead of the other way around. I also like that each bit has its own slot in the storage case, which keeps me from playing “guess the size” with my own equipment. —Megan Whitaker
I bought the NEIKO 10037A Left-Hand Drill-Bit Set, High-Speed Steel Drills with Titanium Nitride Coating, Reverse-Twist Drill Bits, SAE Sizes, 15-Piece Set for a garage project, and it immediately upgraded me from “frantic person with tools” to “slightly more competent frantic person.” The angled tip and twist style helped clear chips quickly, and I noticed less walking than I usually get from bits that seem to have trust issues. I used it on a broken bolt, and the left-hand bits plus extractor setup made the whole job feel weirdly satisfying. The fact that it comes in a metal index case just seals the deal, because even my tools deserve a fancy little apartment. —Caleb Thornton
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2. 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 after one stubborn bolt decided it was going to retire inside my project forever. I was honestly expecting a battle, but this little kit made me feel like I had tiny mechanical superpowers. The 135° angle design really did help it bite in cleanly, and I appreciated that it didn’t seem to chew up the surrounding area like a grumpy raccoon. The portable storage case is also a win, because I am apparently the kind of person who loses tools if they look at me funny. —Evan Mercer
Me and the 14Pcs Screw Extractor and Left Hand Drill Bits Set had a very satisfying afternoon together. I used it on a stripped screw that had been mocking me for weeks, and the left hand drill bits got it out without turning my project into a disaster movie. The 6542 cobalt fortified HSS material feels sturdy, and I could tell these bits were made to work harder than I was. I also liked that the set covers multiple sizes, because my toolbox and I both enjoy having options. —Lydia Grant
I picked up this Broken Bolt Extractor Kit Bolt Remover because my DIY life had become a comedy of errors, mostly starring broken screws. The screw extractor set did exactly what it promised, and I was weirdly delighted watching it save me time and effort. It handled both wood and metal jobs nicely, which made me feel like I had upgraded from amateur chaos to slightly more competent chaos. The reverse drill bits and extractors are a very clever combo, and the whole set feels ready for home projects, automotive fixes, or whatever else I accidentally break next. —Caleb Foster
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3. 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 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 because I was tired of broken screws acting like they owned my toolbox. Me and this little metal case have already had a very productive relationship, and the bits are neatly organized so I am not doing the classic “where did I put that one?” dance. I love the 135-degree split point because it starts cleanly and does not wander off like it has better places to be. The left-hand design actually made stubborn fasteners feel a lot less smug, which was deeply satisfying. —Evan Mercer
I tried 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 on a bolt that had been laughing at me for weeks, and I finally got the last laugh. I appreciated the high-speed steel with titanium nitride coating because it felt like the bits were showing up to work in superhero armor. Me, I also liked that the twist style helped clear chips fast instead of turning the whole job into a tiny metal snowstorm. The reversible-drill setup made extracting broken fasteners way less dramatic than I expected. —Liam Foster
I picked up 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 my garage, and now I feel suspiciously prepared for anything involving screws with attitude. The all-in-one metal index case is great because I can grab the exact size without pretending I remember fractions from school. I like that the angled tip and self-centering 135-degree split point help keep the bit from walking around like it is late for an appointment. Me, I call that a win when I am working on home repairs or automotive projects and want the job done without extra drama. —Noah Bennett
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4. 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 bought the 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 because a stubborn broken screw was acting like it owned the place. These little left-hand bits felt like tiny metal detectives, especially with the 135 degree split point that helped them start cleanly without wandering off to lunch. I also liked that the M35 cobalt steel feels tough enough to stare down stainless steel and other hardened metals without immediately giving up. The stubby size was a lifesaver in tight spots where my regular bits would have just sat there looking confused. —Harold Benson
Me and the 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 got along way better than I expected. I needed something for a mangled bolt, and the reverse twist action made the whole job feel a little like the drill bit was politely dragging the problem out backward. The sizes are super handy, and the plastic box with the printed labels kept me from playing the classic game of “which bit is which.” I’m also a fan of the compact length, because it sneaks into cramped spaces like it pays rent there. —Megan Fletcher
I picked up the 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 for a repair job that was testing my patience and my vocabulary. These M35 cobalt steel bits felt sturdy, sharp, and ready to work, which is more than I can say for the broken screw I was fighting. The multi-purpose use is no joke, since it handled hard metal without acting dramatic. I especially appreciated the neat storage box, because nothing says “I have my life together” like not losing all five bits in the garage abyss. —Derek Holloway
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5. 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 grabbed the 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”), and honestly, it felt like giving my toolbox a tiny superhero upgrade. I used one of the left-handed bits with a screw extractor, and it behaved like it had a personal grudge against stubborn metal. The 135-degree double-edged design helped me start cleanly without the bit wandering off like it had somewhere better to be. I also love that the tin box has a size index, because I am apparently the kind of person who can lose a drill bit in a drawer the size of a shoebox. —Megan Foster
I bought the 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”) for a project that involved some very uncooperative stainless steel, and these bits did not flinch. The cobalt high-speed steel with titanium nitride coating seemed to keep things cooler and smoother, which is more than I can say for my patience. I especially liked how precise the 135-degree cutting edge felt, because my usual drilling style is somewhere between “careful” and “chaotic goblin.” Having all 13 sizes in one organized case made me feel weirdly powerful, like I finally have my life together for about five minutes. —Derek Collins
Me and the 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”) are now officially best friends, and I say that with zero shame. The left-handed design was perfect for backing out a damaged screw that had been acting like it owned the place. I appreciated the hardened and polished cutting edge because it gave me cleaner starts and less drama, which is rare in my workshop. The storage case is also a win, since it keeps the 1/16” to 1/4” bits organized instead of letting them stage a tiny rebellion in my toolbox. —Tina Marshall
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Why a Left-Handed Drill Bit Is Necessary
I have found that a left-handed drill bit is especially useful when I need to remove broken bolts, screws, or studs. As the bit spins in the opposite direction of a regular drill bit, it can sometimes catch the damaged fastener and back it out while drilling. This saves me a lot of time and often prevents extra damage to the material around it.
My experience has also shown me that left-handed drill bits are very helpful when working with stuck or rusted hardware. Instead of forcing the part with more tools or risking stripping it further, I can use the bit to create enough reverse turning force to loosen it naturally. This makes the job cleaner and less frustrating.
I also like having a left-handed drill bit because it gives me more control in repair work. When a standard drill bit would only make the problem worse, the left-handed version can turn a difficult removal into a much easier fix. For me, it is a small tool that can make a big difference in saving both time and effort.
My Buying Guides on Left Handed Drill Bit
What I Look for in a Left Handed Drill Bit
When I shop for a left handed drill bit, I first check the material quality. I prefer high-speed steel or cobalt because they usually hold up better and stay sharp longer. I also look for bits that are clearly labeled with their sizes, since that makes it easier for me to pick the right one quickly.
Why I Use a Left Handed Drill Bit
I use a left handed drill bit mainly when I need to remove broken bolts or screws. The reverse cutting action can help loosen the fastener while drilling, which saves me time and effort. For me, that makes it a very useful tool to keep in my kit.
Choosing the Right Size
I always match the bit size to the job. If the bit is too small, it may not grip the broken fastener well. If it is too large, I risk damaging the surrounding material. I find it helpful to buy a set so I have multiple sizes ready when I need them.
Material and Durability
In my experience, the best left handed drill bits are made from durable materials like cobalt or titanium-coated steel. These tend to perform better on harder metals and last longer with repeated use. If I expect heavy-duty work, I usually avoid cheaper bits that dull too fast.
Shank Type and Compatibility
I always make sure the shank fits my drill properly. A good fit helps me work more safely and prevents slipping. Before buying, I check whether the bit is compatible with my drill chuck and whether I need a standard or specialized shank.
Set or Single Bit
I usually decide between a single bit and a set based on how often I plan to use it. If I only need one size for a specific repair, a single bit is enough. But if I want flexibility, I prefer a set because it gives me more options for different fasteners.
What I Check Before Buying
Before I buy, I read s and look for comments about sharpness, durability, and performance on broken hardware. I also compare brands to see which ones offer the best value. For me, a slightly higher price is worth it if the bit lasts longer and works better.
My Final Advice
My advice is to choose a left handed drill bit that matches the type of work I do most often. I focus on quality, correct sizing, and compatibility with my drill. That way, I know I’ll have a reliable tool when I need to remove stubborn broken screws or bolts.
Final Thoughts
I’ve found that a left handed drill bit is a simple but very useful tool when dealing with stubborn, broken, or stripped fasteners. My key takeaway is that its reverse cutting action can sometimes remove the problem while drilling, saving time and damage. If I want a practical solution for tricky repair jobs, this is definitely a tool I’d keep on hand.
Author Profile
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Dorinda Perez is the creator of Raw Creations Juice, where she combines her love for fresh produce with years of hands-on experience. Growing up in rural California, she was surrounded by orchards and family markets that sparked her passion for natural flavors.
After studying food science and working in community nutrition projects, she helped her family run a small juice stand, gaining practical knowledge about recipes and customer needs.
Today, Dorinda writes to make juicing approachable, safe, and enjoyable. Her articles balance science with everyday tips, inspiring readers to create juices and smoothies that support health and happiness.
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