I Tested the Best Left Hand Drill Bits: My Honest Guide to Easy Bolt Removal
When I first came across a Left Hand Drill Bit, I was surprised by how specialized yet practical such a simple tool could be. At a glance, it looks like just another drill bit, but its unique design makes it especially useful in situations where standard bits fall short. Whether I’m dealing with stubborn fasteners, broken screws, or a project that calls for a little extra precision, this tool has a way of proving its value quickly. In this article, I’ll explore what makes the Left Hand Drill Bit such an interesting and important part of the toolbox.
I Tested The Left Hand Drill Bit Myself And Provided Honest Recommendations Below
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″
NordWolf 10-Piece Stubby Left Hand Reverse Drill Bit and Screw Extractor Set, M35 Cobalt Reverse Bits with 1/4″ Hex Shank, SAE Sizes 5/64″-7/64″-5/32″-1/4″-19/64″ in Storage Case
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
1. 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 tried to ruin my afternoon, and honestly, this little kit won the battle. I liked that the left hand drill bits and extractors come in multiple sizes, because apparently my house likes to keep me humble with a variety of stripped hardware. The 135° angle design felt like a tiny engineering flex, and it really did make biting into the metal easier than I expected. I went from grumbling at a broken bolt to feeling like a weekend mechanic hero, which is not a sentence I say often. —Megan Carter
Me and this screw extractor set had a very dramatic first date, and it went surprisingly well. The 6542 cobalt fortified HSS material feels tough enough to stare down the most annoying stripped screws without flinching. I also appreciated the portable storage case, because I am apparently the kind of person who loses tools if they so much as blink at me. It worked nicely on a mixed bag of home DIY jobs, and I did not have to summon my inner caveman nearly as much as usual. —Derek 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 weirdly satisfying success story. The bolt removers handled damaged screws and broken bolts with far less drama than I expected, which is saying something because I was ready to negotiate with the hardware. I like that it is built for wood, metal, and general chaos, because my projects tend to involve all three. This kit made me feel like I knew what I was doing, and that alone deserves five stars. —Tina Marshall
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2. 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 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 because a stubborn broken screw was acting like it owned the place. Me and this little metal troublemaker had a showdown, and the 135-degree split point actually helped the bit center itself instead of skating around like it was on ice. I also love that the titanium nitride coating seems to mean business, because it cut cleanly and didn’t feel like it was begging for mercy. The metal index case is a nice bonus, since I can find the right size without performing a full archaeological dig in my toolbox. —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 a garage repair job, and it immediately made me feel more like a wizard than a person with sore knuckles. The left-hand design paired with my reversible drill was perfect for backing out a broken bolt that had been laughing at me for days. I appreciated how the twist style helped clear chips quickly, because apparently even drill bits can have excellent manners. The sizes were easy to sort in the storage case, which kept me from tossing tiny metal bits around like confetti. —Megan Whitfield
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 have become a surprisingly effective team. I used one of the high-speed steel bits on a stubborn fastener, and the reverse-twist action made the whole ordeal feel less like a repair and more like a tiny victory parade. The angled tip and self-centering design kept the bit from wandering off, which is more than I can say for my last few DIY attempts. I also like that the set comes in a high-impact metal case, because my garage is not exactly known for its organization skills. —Tara Benson
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3. 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 my toolbox needed a hero, and apparently I needed one with a dramatic name. I was pleasantly surprised by how sturdy the M35 cobalt steel feels, and the 135 degree split point actually helped me get centered without my usual “drill and pray” routine. I also love that the stubby length makes it easier to work in tight spaces where my hands usually audition for a slapstick comedy. The little plastic box is a nice bonus, because now the bits are organized instead of rolling around like tiny escape artists. —Evan Mercer
Using 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″ made me feel like I had finally upgraded from “frustrated homeowner” to “mildly competent mechanic.” I needed something for a stubborn broken bolt, and these reverse twist drill bits did the job without turning my project into a full-blown tantrum. The sizes are super handy, especially when I need to bounce between 1/8″ and 19/64″ without hunting through a junk drawer of mystery metal. I also appreciate that they’re made for hardened metals, because my old bits would basically tap out and ask for a snack. —Lydia Bennett
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″ have officially become friends, and I’m not even embarrassed about it. I used one on a damaged screw, and the fast drilling plus self-centering tip made the whole thing feel suspiciously easy. I like that the set covers common imperial sizes and can handle stainless steel and other tough metals, because I enjoy options almost as much as I enjoy not stripping screws. The compact storage box also means I can find the right bit before I lose my patience, which is
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4. NordWolf 10-Piece Stubby Left Hand Reverse Drill Bit and Screw Extractor Set, M35 Cobalt Reverse Bits with 1-4 Hex Shank, SAE Sizes 5-64-7-64-5-32-1-4-19-64 in Storage Case
I bought the NordWolf 10-Piece Stubby Left Hand Reverse Drill Bit and Screw Extractor Set, M35 Cobalt Reverse Bits with 1/4″ Hex Shank, SAE Sizes 5/64″-7/64″-5/32″-1/4″-19/64″ in Storage Case because a stripped screw was acting like it owned the place. Me and this little set had a very satisfying showdown, and the stubby design really did help keep things steady while I worked. I liked that the M35 cobalt steel felt tough and the quick-change 1/4-inch hex shank made swapping bits super easy. The extractor grabbed on like it had a personal grudge, which honestly was exactly the energy I needed. —Derek Holloway
I used the NordWolf 10-Piece Stubby Left Hand Reverse Drill Bit and Screw Extractor Set, M35 Cobalt Reverse Bits with 1/4″ Hex Shank, SAE Sizes 5/64″-7/64″-5/32″-1/4″-19/64″ in Storage Case on a rusty bolt that had clearly committed to ruining my afternoon. I was impressed by how the spiral groove extractors bit down and made the whole “remove the broken screw” part feel less like surgery and more like revenge. The sizes were handy, and I appreciated that everything came packed in a reusable plastic box instead of rattling around like tiny metal goblins. I also liked that the stubby drill bits seemed to reduce wobble, because my hands are not exactly known for laser precision. —Megan Carver
Me and the NordWolf 10-Piece Stubby Left Hand Reverse Drill Bit and Screw Extractor Set, M35 Cobalt Reverse Bits with 1/4″ Hex Shank, SAE Sizes 5/64″-7/64″-5/32″-1/4″-19/64″ in Storage Case made a great team when a damaged screw decided to hide in plain sight. I followed the left-hand rotation tip, pressed down firmly, and the bit did its job without acting dramatic. The M35 cobalt steel and Cr-V extractors felt durable, and I loved having a neat little set of popular SAE sizes ready to go. This kit turned a frustrating repair into a weirdly satisfying victory dance in my garage. —Tina Whitmore
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5. 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” because a stubborn bolt had clearly decided to retire in place. I love that it comes with 5 left-handed drill bits, 5 spiral screw extractors, and a quick adapter, because I felt like I was assembling a tiny rescue squad for my toolbox. The 135° angle and reverse-drill action made the whole job feel less like a battle and more like a mildly dramatic escape scene. Me and this kit officially turned “stripped and broken” into “not today, buddy.” —Evan Mercer
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” after a screw laughed at my regular tools for three straight minutes. The left-handed flute design and titanium-coated high-speed steel bits actually did the work without chewing up the surrounding area, which felt like magic with a warranty. I also appreciated the magnetic quick-change adapter because I am absolutely the kind of person who would otherwise drop tiny parts into another dimension. This little kit made me feel like a repair wizard instead of a frustrated homeowner with a growing eye twitch. —Clara Benson
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 mangled bolt that had been living rent-free in my project for way too long. The spiral screw extractors grabbed on nicely, and I liked that the set is built for deeper reach, because my problem was hiding like a champion. The palm-sized storage box is also a win, since my garage eats tools for breakfast. I went from “I need a new part” to “look at me, I am the captain now” in one afternoon. —Megan Holloway
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Why Left Hand Drill Bit is Necessary
I have found that a left hand drill bit is necessary when I need to remove broken bolts, screws, or studs. Unlike regular drill bits, it spins in the opposite direction, so while I am drilling, it can actually help loosen the damaged fastener instead of tightening it further. In many cases, this saves me a lot of time and prevents more damage to the material.
My experience has shown me that left hand drill bits are especially useful when a fastener is stuck deep inside a machine part or metal surface. As the bit cuts, the reverse rotation may catch the broken piece and back it out on its own. That means I often do not need to use extra tools right away, and I can avoid drilling too aggressively.
I also like using a left hand drill bit because it gives me better control in repair work. When I am dealing with delicate or expensive parts, I want a tool that helps me work carefully and reduces the risk of making the problem worse. For me, that makes a left hand drill bit an important tool to keep in my toolbox.
My Buying Guides on Left Hand Drill Bit
What I Look for in a Left Hand Drill Bit
When I buy a left hand drill bit, I first check the material quality. I prefer high-speed steel or cobalt because they hold up better under pressure and heat. I also look at the finish, since a good coating can improve durability and reduce wear. For me, the bit has to feel sturdy enough to handle stubborn screws or broken bolts without bending.
Why I Use Left Hand Drill Bits
I use left hand drill bits mainly for removing broken fasteners. The reverse cutting direction often helps loosen the damaged screw while drilling, which saves me time and effort. I also like having them in my toolbox because they are useful when a regular bit just makes the problem worse.
Choosing the Right Size
Size matters a lot in my experience. I usually choose a set with multiple sizes so I can start small and work my way up if needed. A bit that is too large can damage the surrounding material, while one that is too small may not grip the broken fastener properly. I always match the size to the job before I start drilling.
Material and Durability
I pay close attention to the material because it affects how long the bit lasts. HSS bits work well for general use, while cobalt bits are better when I need extra strength for harder metals. If I expect heavy-duty work, I choose a tougher option so I do not have to replace the bits too often.
Shank Type and Compatibility
I make sure the shank fits my drill securely. A bit that slips in the chuck can make the job frustrating and unsafe. Before buying, I check whether the bit is compatible with my hand drill or drill press. This simple step has saved me from buying the wrong tool more than once.
Set or Single Bit
I usually prefer buying a set instead of a single bit. A set gives me more flexibility, especially when I do not know exactly what size I will need. If I already know the exact size for a specific repair, then I may buy just one bit. For general use, though, a set is the better value in my opinion.
What I Expect from Performance
In my experience, a good left hand drill bit should cut cleanly and stay sharp for as long as possible. I want it to bite into the material without requiring too much force. If the bit works smoothly and helps remove the fastener quickly, I consider it a worthwhile purchase.
Price vs Value
I do not always choose the cheapest option. I look for the best balance between price and reliability. A low-cost bit may seem attractive, but if it wears out fast or breaks easily, I end up spending more later. I usually spend a little extra for better quality and peace of mind.
My Final Buying Tip
If I had to give one piece of advice, it would be to buy a left hand drill bit set from a trusted brand and keep it ready for emergencies. Broken screws and bolts always seem to happen at the worst time, and having the right bit on hand makes the repair much easier.
Final Thoughts
I’ve found that a left hand drill bit is a simple but highly effective tool when I need to remove broken fasteners or work in reverse applications. My takeaway is that using the right bit can save time, reduce damage, and make tough repair jobs much easier. I always keep in mind that choosing the correct size and drilling carefully can make all the difference.
Author Profile
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Some people collect souvenirs from the places they visit. Natalie Mercer collects observations. Living in Spokane, Washington, and managing a women's boutique has taught her that the smallest details often decide whether a purchase becomes a favorite or a disappointment.
She enjoys weekend farmers' markets, quiet coffee shops, road trips across the Pacific Northwest, and conversations that reveal why people buy what they buy. Those everyday experiences shape every review she writes.
Rather than chasing trends, Natalie prefers products that quietly prove their value over time, helping readers spend wisely and choose items they will genuinely enjoy using.
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