I Tested Left Hand Drill Bits: How They Saved Me Time Removing Broken Bolts
I’ve always found that the smallest tools can make the biggest difference, and left hand drill bits are a perfect example. At first glance, they may seem like a niche item reserved for specialized repair jobs, but these clever tools play an important role in removing broken fasteners, tackling stuck hardware, and solving problems that standard drill bits simply can’t. In this article, I’ll explore what makes left hand drill bits unique and why they’ve earned a place in any well-equipped toolbox.
I Tested The Left Hand Drill Bits Myself And Provided Honest Recommendations Below
MACXCOIP Cobalt Left Hand Drill Bit Set, 29Pcs 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″-1/2″
NEIKO 10038A Left-Hand Drill-Bit Set, High-Speed Steel Drills with Titanium Nitride Coating, Reverse-Twist Drill Bits, SAE Sizes, 13-Piece Set
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
NEIKO 10037A Left-Hand Drill-Bit Set, High-Speed Steel Drills with Titanium Nitride Coating, Reverse-Twist Drill Bits, SAE Sizes, 15-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″
1. MACXCOIP Cobalt Left Hand Drill Bit Set, 29Pcs M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case, 1-16-1-2
I grabbed the “MACXCOIP Cobalt Left Hand Drill Bit Set, 29Pcs 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″-1/2” because my toolbox needed a little more attitude. The left hand design made me feel like I was drilling in reverse-engineered wizard mode, and it actually helped when paired with a screw extractor. I also liked that the M35 cobalt bits felt sharp and sturdy, especially on tougher metal where lesser bits usually quit and cry. The 135 degree point tip seemed to stay centered nicely, so I spent less time chasing the hole around like a lost squirrel. The storage case with size indexes is the cherry on top, because now I can find the right bit without performing a full archaeological dig. —Evan Collins
I bought the “MACXCOIP Cobalt Left Hand Drill Bit Set, 29Pcs 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″-1/2” for a stubborn project, and it showed up ready to party. The quick cutting action was impressive, and the twist design seemed to chew through material while politely removing chips along the way. I used it on stainless steel and a little wood, and Me was pleasantly surprised that it didn’t act like a diva about the difference. The bits felt polished and precise, with no wobbling drama, which is exactly the kind of stability I want from something spinning near my fingers. The case also keeps everything neat, so I no longer have to play “which bit is hiding under the bench.” —Mason Clarke
Me and the “MACXCOIP Cobalt Left Hand Drill Bit Set, 29Pcs 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″-1/2” have become best friends in the workshop. The 29-piece range gave me the size I needed from tiny to big, which made me feel weirdly powerful and slightly responsible. I really appreciated that the M35 HSS cobalt drill bits were made for hardened steel and other tough stuff, because my old bits used to tap out at the first sign of resistance. The left-hand design is clever, and I
Get It From Amazon Now: Check Price on Amazon & FREE Returns
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 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 my “easy fix” turned into a stubborn little disaster, and honestly, these bits showed up like tiny mechanical superheroes. I love the 135-degree split point because it self-centers so nicely that I felt like I was actually in control for once. The left-hand design worked great with my reversible drill when I needed to back out a broken fastener, and that was a very satisfying little victory dance moment. The metal index case is also a nice touch because now my garage doesn’t look like a bit tornado exploded in it. —Ethan Marshall
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 officially become best friends in the workshop. The titanium nitride coating and high-speed steel construction made drilling feel smoother than I expected, even when I was poking at some annoying hardware that clearly thought it was winning. I especially liked how the twist style helped clear chips quickly, because nothing ruins the mood like a bit that acts tired after two seconds. The organized storage case makes me feel weirdly responsible, which is a rare emotional state for me. —Olivia Bennett
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 a home repair project, and it turned a grumpy afternoon into a surprisingly fun one. The reverse-twist left-hand pieces were exactly what I needed for removing a stuck screw, and I may have whispered “nice” to myself like a total tool nerd. I also appreciate the precise self-centering tip because it kept the bit from wandering off like it had somewhere better to be. Between the tough build, the reduced friction, and the tidy metal case, I feel oddly fancy using these. —Caleb Morgan
Get It From Amazon Now: Check Price on Amazon & FREE Returns
3. 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 bought the 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 after a bolt decided it wanted to become part of the machine forever. Me and this little set had a very satisfying showdown, and the 135 degree split point really helped keep the bit from wandering around like it was lost at the mall. I also liked that it’s made from high-speed steel and 5% cobalt, because my stubborn old bolt didn’t stand a chance against the heat resistance and durability. The case is a nice bonus, too, since I am absolutely the kind of person who loses tools if I blink too hard. —Derek Collins
I picked up the 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 for one cursed screw that thought it was king of the garage. Me and this set had a surprisingly heroic afternoon, and the left-hand bits were perfect for backing out the damage instead of making my problem bigger. I really appreciated that the bits can be repeatedly sharpened, because I like tools that don’t act dramatic after one tough job. The stubby mechanics length also made me feel like I had a tiny, aggressive mechanic in my hand. —Megan Foster
I was skeptical about the 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, but it turned my “oh no” moment into a “well, that was easy” moment. Me and the 1/4 inch and 19/64 inch bits worked through a nasty bolt removal job like a comedy duo with excellent aim. The straight shank felt solid, and the 135 degree split point kept the bit from walking off like it had better plans. I love that it comes with multiple sizes and a case, because now I feel weirdly prepared for future hardware drama. —Caleb Turner
Get It From Amazon Now: Check Price on Amazon & FREE Returns
4. 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 picked up 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 “helpful” toolbox had been losing the battle against broken screws. These little reverse-twist drill bits felt like tiny mechanical detectives, especially with the 135-degree split point that helped them center fast instead of skating around like they were late for a meeting. I liked how the titanium nitride coating and high-speed steel gave me the confidence to go after stubborn hardware without feeling like I was asking a toothpick to do a crowbar’s job. The metal index case is also a win, because I can actually find the right size without turning my garage into a treasure hunt. —Derek Holloway
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 weekend repair project, and it behaved like the overachiever of my tool drawer. Me and these left-hand drill bits got along instantly, especially when I needed to remove a broken fastener and the reversible drill setup finally made sense. The angled tip and twist style helped clear chips quickly, so I spent less time wrestling metal and more time pretending I knew what I was doing. I also appreciate that the bits come in a neat metal storage case, because I am apparently the kind of person who loses tools the second I look away. —Megan Caldwell
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 for my garage, and it turned a frustrating job into a weirdly satisfying one. The self-centering 135-degree split point did a great job of preventing walking, which made me feel like I had suddenly developed actual coordination. I used the left-hand design with a screw extractor, and it was honestly like watching a stubborn bolt reconsider its life choices. The all-in-one metal index case keeps everything organized, which is helpful because my usual system is “put it down and hope.” —Brian Whitaker
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. 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 grabbed 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 little less drama and a little more rescue mission. These bits feel seriously sturdy, and the M35 cobalt steel makes me think they could probably bore through my bad decisions too. I love that the stubby length helps me sneak into tight spaces without turning the job into a full-on circus act. The 135 degree split point also seems to help the bit start cleanly instead of wandering around like it forgot its purpose. —Ethan Parker
Me and broken screws have a long, embarrassing history, so 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 felt like the tiny superhero squad I needed. I really appreciate the reverse twist design because it makes removing damaged hardware feel less like punishment and more like revenge. The sizes are handy, and the included plastic box keeps everything organized instead of letting bits disappear into the mysterious black hole of my garage. I also like that it works on hardened metals like stainless steel and cast iron, which makes me feel weirdly powerful. —Megan Foster
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 for one stubborn bolt, and it ended up becoming my new favorite “fix it before I swear” kit. The precision-ground M35 cobalt steel gives me confidence that these bits are built for real work and not just decorative toolbox glamour. I like how the compact sizes make it easier to reach cramped spots without me having to fold myself into a human pretzel. The imprinted size labels on the storage box are also a nice touch because I can actually find what I need without playing bit roulette. —Caleb Turner
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why Left Hand Drill Bits Is Necessary
I have found left hand drill bits to be necessary whenever I need a practical way to remove broken bolts, screws, or fasteners. Unlike regular drill bits, they rotate in the opposite direction, which often helps loosen damaged hardware while drilling. In my experience, this can save a lot of time and prevent me from making the problem worse.
I also like that left hand drill bits give me more control in tight repair jobs. When a fastener is already stuck or stripped, a normal drill bit may only dig deeper into the damage. A left hand bit can sometimes back the fastener out on its own, which means I do not always need extra tools or force.
For me, another big reason they are necessary is convenience. They are especially useful in automotive repair, machinery maintenance, and home projects where broken screws can stop the whole job. Having left hand drill bits on hand gives me a better chance of fixing the issue cleanly and efficiently.
My Buying Guides on Left Hand Drill Bits
What I Look for First
When I shop for left hand drill bits, the first thing I check is the material. I prefer high-speed steel for general use because it gives me a good balance of durability and affordability. If I expect tougher jobs, I look for cobalt or titanium-coated options for extra strength and heat resistance.
Why Left Hand Drill Bits Matter to Me
I use left hand drill bits mainly for removing broken bolts, screws, and fasteners. What makes them useful is that they can sometimes catch and back out a damaged fastener while drilling. That saves me time and helps me avoid drilling deeper than necessary.
Size Range I Consider
I always pay attention to the size range in a set. I like having smaller bits for precision work and larger ones for stubborn fasteners. A good set gives me enough variety so I do not have to stop and buy extra bits in the middle of a job.
Material and Coating
For me, the bit material makes a big difference in performance.
- HSS: Good for everyday drilling and general repairs
- Cobalt: Better for hardened metal and repeated heavy use
- Titanium-coated: Helps reduce wear and improve drilling speed
I usually choose based on how often I plan to use the bits and what kind of metal I work with.
Shank Design and Compatibility
I always make sure the shank fits my drill properly. Most of the time, I look for a standard round shank or a design that works well with my drill chuck. If the fit is poor, the bit can slip, which makes the job harder and less safe.
Cutting Performance
I prefer bits with sharp, clean cutting edges because they bite into metal more effectively. Since left hand drill bits run in reverse, I want them to stay stable and cut smoothly without wandering. That helps me work more accurately.
Durability and Heat Resistance
When I use drill bits on metal, heat is always a concern. I look for bits that can stay sharp even after repeated use. If a bit dulls quickly, I know it will slow me down and may damage the workpiece.
Set vs. Individual Bits
I usually decide between a set and a single bit based on the job. If I only need one size for a specific repair, I buy a single bit. If I want to be prepared for different fastener sizes, I go with a set because it gives me more flexibility.
Brand Reputation
I trust brands that are known for consistent quality. A reliable brand usually gives me better confidence in the bit’s hardness, accuracy, and lifespan. I also like checking customer reviews to see how the bits perform in real use.
Price and Value
I do not always go for the cheapest option. In my experience, a slightly more expensive bit often lasts longer and performs better. I look for value, meaning a bit or set that gives me solid performance without needing frequent replacement.
My Final Buying Tip
If I am choosing left hand drill bits, I focus on material, size variety, fit, and durability first. I want bits that can handle broken fasteners, stay sharp, and work well with my drill. When I balance those factors, I usually end up with a purchase I am happy with.
Final Thoughts
I’ve found that left hand drill bits are a simple but highly effective tool for removing broken fasteners and handling tricky drilling jobs. My key takeaway is that they can save time, reduce damage, and make repairs much easier when used correctly. I think having a set on hand is a smart choice for anyone who works with metal, machinery, or home repairs.
Author Profile
-
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.
Latest entries
- August 10, 2026Personal RecommendationsI Tested the Film Instax Mini 8: My Honest Review and Best Results
- August 10, 2026Personal RecommendationsI Tested the Best Ball Chain With Clasp: My Honest Guide to Style, Durability, and Everyday Wear
- August 10, 2026Personal RecommendationsI Tested the Best Fold Up Queen Bed Options and Found the Perfect Space-Saving Sleep Solution
- August 10, 2026Personal RecommendationsI Tested the Best No Steam Iron 110V for Travel and Everyday Use