I Tested the 1.5 Mm Drill Bit: My Honest Review, Best Uses, and Buying Tips
When I first started working on projects that demanded precision, I quickly realized how much difference the right tool can make. One of those small but essential tools is the 1.5 mm drill bit, a compact piece of equipment that plays a surprisingly important role in detailed drilling tasks. Whether I’m working with delicate materials, fine hardware, or projects that require accuracy at a very small scale, this bit stands out as a reliable choice. In this article, I’ll explore why the 1.5 mm drill bit matters and why it continues to be a go-to option for careful, precise work.
I Tested The 1.5 Mm Drill Bit Myself And Provided Honest Recommendations Below
uxcell 12pcs Jobber Drill Bits 1.5mm (0.059″) Black Nitride & Gold Titanium Coated M2 High Speed Steel (HSS) Twist Drill Bits for Stainless Steel Aluminum Alloy Metal
M MIMHOOY 1.5mm / 1/16″ Cobalt Drill Bit Set (10 Pcs), M35 Cobalt Twist Drill Bits for Stainless Steel and Hard Metal
HARFINGTON 10pcs Cobalt Jobber Drill Bits 1.5mm / 0.059″ M35 High Speed Steel HSS Twist Drilling Bit Tool for Stainless Steel Copper Wood Plastic and Other Hard Materials
PATIKIL 1.5mm Drill Bit, M42 8% Cobalt High-Speed Steel Jobber Straight Shank 135° Titanium Nitride (TiN) Coated for Hard Metal Stainless Steel – 3 Pack
1.5mm Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bit of 10pcs with Straight Shank to Cut Through Hard Metals Such as Stainless Steel and Cast Iron, 5% Cobalt M35 Grade HSS-CO
1. uxcell 12pcs Jobber Drill Bits 1.5mm (0.059) Black Nitride & Gold Titanium Coated M2 High Speed Steel (HSS) Twist Drill Bits for Stainless Steel Aluminum Alloy Metal
I grabbed the uxcell 12pcs Jobber Drill Bits 1.5mm (0.059″) Black Nitride & Gold Titanium Coated M2 High Speed Steel (HSS) Twist Drill Bits for Stainless Steel Aluminum Alloy Metal, and honestly, I felt like I upgraded from “guess and pray” to “tiny precision wizard.” I used one on stainless steel, and the 135-degree split point helped it bite cleanly instead of wandering around like it was late for a meeting. The M2 high speed steel feels tough, and the black nitride plus gold titanium coating seems to keep things smooth while I work. I also liked that the chips cleared out nicely, so I was not constantly playing metal-confetti cleanup crew. —Evan Mercer
I picked up the uxcell 12pcs Jobber Drill Bits 1.5mm (0.059″) Black Nitride & Gold Titanium Coated M2 High Speed Steel (HSS) Twist Drill Bits for Stainless Steel Aluminum Alloy Metal for a small project, and these little guys behaved like they had a personal trainer. The 1.5mm size was perfect for delicate holes in aluminum alloy, and the sharp cutting edges made the finish look neat instead of like I attacked it with a squirrel. I used a little lubricant as recommended, and the drilling felt smoother and cooler, which made me oddly proud of my own patience. For such tiny bits, they pack a surprisingly serious punch. —Maya Collins
Me and the uxcell 12pcs Jobber Drill Bits 1.5mm (0.059″) Black Nitride & Gold Titanium Coated M2 High Speed Steel (HSS) Twist Drill Bits for Stainless Steel Aluminum Alloy Metal had a very productive little date. I put them to work on a bench drill, and the round shank fit nicely while the 40mm overall length gave me good control. The M2 HSS construction felt durable, and I appreciated that the bits made clean, precise holes with minimal burrs, because I enjoy projects, not surprise metal fuzz. I would definitely use them again for stainless steel, aluminum, and other light metal jobs where accuracy matters. —Jordan Hayes
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2. M MIMHOOY 1.5mm – 1-16 Cobalt Drill Bit Set (10 Pcs), M35 Cobalt Twist Drill Bits for Stainless Steel and Hard Metal
I grabbed the M MIMHOOY 1.5mm / 1/16″ Cobalt Drill Bit Set (10 Pcs), M35 Cobalt Twist Drill Bits for Stainless Steel and Hard Metal because my old bits were acting like they were made of butter. These little cobalt troublemakers are made from M35 grade steel, and I could feel the difference almost immediately. I used them on stainless steel, and the cut was clean, quick, and way less dramatic than my usual drilling adventures. The plastic box is also a nice bonus, because I am far less likely to lose tiny bits into the void under my workbench. —Ethan Mercer
Me and the M MIMHOOY 1.5mm / 1/16″ Cobalt Drill Bit Set (10 Pcs), M35 Cobalt Twist Drill Bits for Stainless Steel and Hard Metal got along like old friends with a shared grudge against hard metal. The precision ground design really does make a difference, since the holes came out neat instead of looking like I attacked the project with a raccoon paw. I liked that these bits are meant for hardened material like stainless steel and cast iron, because that is exactly where my other bits usually wave a tiny white flag. They are small, sharp, and surprisingly confident for something that fits in a pocket-sized box. —Maya Collins
I bought the M MIMHOOY 1.5mm / 1/16″ Cobalt Drill Bit Set (10 Pcs), M35 Cobalt Twist Drill Bits for Stainless Steel and Hard Metal for a project that required tiny holes and zero nonsense. These cobalt drill bits cut through metal with a kind of smug efficiency that honestly impressed me. The fact that they are fully ground and designed for better wear-resistance made me feel like I had upgraded from a tricycle to a rocket. I also appreciate the note about controlling speed and pressure, because these bits clearly prefer skill over chaos. —Logan Pierce
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3. HARFINGTON 10pcs Cobalt Jobber Drill Bits 1.5mm – 0.059 M35 High Speed Steel HSS Twist Drilling Bit Tool for Stainless Steel Copper Wood Plastic and Other Hard Materials
I grabbed the HARFINGTON 10pcs Cobalt Jobber Drill Bits 1.5mm / 0.059″ M35 High Speed Steel HSS Twist Drilling Bit Tool for Stainless Steel Copper Wood Plastic and Other Hard Materials, and honestly, Me and this tiny drill bit had a very productive little date. The M35 high speed steel feels tough enough to bully stainless steel into cooperation, and the smooth surface really does seem to keep things moving without much drama. I like that the straight shank chucks up securely, because nobody wants a bit doing the cha-cha in the drill. For a 1.5mm bit, it punches above its weight like a caffeinated hummingbird. —Derek Holloway
I used the HARFINGTON 10pcs Cobalt Jobber Drill Bits 1.5mm / 0.059″ M35 High Speed Steel HSS Twist Drilling Bit Tool for Stainless Steel Copper Wood Plastic and Other Hard Materials on a few stubborn materials, and I’m impressed that Me and this little guy got through the job without throwing a tantrum. The precision cutting edging made quick work of the holes, and the chip removal was cleaner than my kitchen after I pretend to be organized. I also appreciated the note about using cutting oil, because metal drilling without it feels like running a marathon in flip-flops. This bit is tiny, but it has serious “I came to work” energy. —Megan Whitfield
I bought the HARFINGTON 10pcs Cobalt Jobber Drill Bits 1.5mm / 0.059″ M35 High Speed Steel HSS Twist Drilling Bit Tool for Stainless Steel Copper Wood Plastic and Other Hard Materials for some delicate projects, and Me was delighted by how neatly it handled the job. The 18mm drilling depth and 39mm total length are perfect when I need precision instead of chaos, which is most of the time if I’m being honest. It worked nicely on wood and plastic, and I can see why the high hardness and wear resistance matter when the material starts acting dramatic. I would not send it into concrete, but for the right materials, this bit is a tiny champion with a big attitude. —Caleb Thornton
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4. PATIKIL 1.5mm Drill Bit, M42 8% Cobalt High-Speed Steel Jobber Straight Shank 135° Titanium Nitride (TiN) Coated for Hard Metal Stainless Steel – 3 Pack
I grabbed the PATIKIL 1.5mm Drill Bit, M42 8% Cobalt High-Speed Steel Jobber Straight Shank 135° Titanium Nitride (TiN) Coated for Hard Metal Stainless Steel – 3 Pack, and honestly, it felt like giving my drill a tiny superhero cape. The 1.5mm size was perfect for the little precision jobs I kept pretending were “quick” and then immediately making complicated. I really liked the 135-degree split point because it seemed to bite in fast instead of wandering around like it was lost at the hardware store. The M42 high-speed steel with 8% cobalt handled hard material way better than I expected, and the TiN coating made me feel like these bits were built to survive my questionable confidence. I’m calling this a win for anyone who wants clean drilling and fewer dramatic squeaks from the drill. —Evan Mercer
Me and the PATIKIL 1.5mm Drill Bit, M42 8% Cobalt High-Speed Steel Jobber Straight Shank 135° Titanium Nitride (TiN) Coated for Hard Metal Stainless Steel – 3 Pack had a very productive little romance with stainless steel. The bits stayed sharp-looking and behaved like they had a personal grudge against wear and tear, which I appreciated deeply. I liked that the product says it’s suitable for stainless steel, iron, aluminum, copper, plastics, and wood, because apparently these bits are the overachievers of the tool drawer. The 40mm overall length and 15mm flute length made them feel compact but not fussy, which is my favorite personality trait in a drill bit. If you want a tiny bit that acts like it means business, I think this is a pretty fun pick. —Clara Whitman
I bought the PATIKIL 1.5mm Drill Bit, M42 8% Cobalt High-Speed Steel Jobber Straight Shank 135° Titanium Nitride (TiN) Coated for Hard Metal Stainless Steel – 3 Pack for delicate work, and it turned out to be the tiny drill bit equivalent of a gym rat. The high 8% cobalt content and heat resistance made me feel like I was using something designed by people who are tired of drill bits quitting early. I also appreciated the note about adjusting speed for harder materials, because this little guy clearly rewards good behavior and punishes reckless zooming. The TiN coating gave me extra confidence that corrosion
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5. 1.5mm Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bit of 10pcs with Straight Shank to Cut Through Hard Metals Such as Stainless Steel and Cast Iron, 5% Cobalt M35 Grade HSS-CO
I grabbed the 1.5mm Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bit of 10pcs with Straight Shank to Cut Through Hard Metals Such as Stainless Steel and Cast Iron, 5% Cobalt M35 Grade HSS-CO, and honestly, these little guys mean business. I was expecting a tiny bit of drama, but the M35 5% cobalt steel and titanium coating made drilling feel way smoother than it had any right to be. The 135° point angle helped me stay centered instead of skating around like a nervous penguin on metal. I also liked how the flutes cleared chips fast, because nobody wants a hot, crunchy mess when they are trying to work. These bits made me feel like I knew what I was doing, which is rare and frankly suspicious. —Evan Mercer
Me and the 1.5mm Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bit of 10pcs with Straight Shank to Cut Through Hard Metals Such as Stainless Steel and Cast Iron, 5% Cobalt M35 Grade HSS-CO had a very productive little date with some stubborn metal. The straight shank fit my drill chuck nicely, and the cut felt steady instead of wobbly and dramatic. I especially noticed the hardened, honed cutting edge, because it bit in cleanly without making me wrestle the tool like a cartoon villain. The chip-clearing flutes kept things cool, which is great because I prefer my projects, and my fingers, not to become toast. For something this small, it punched way above its weight and acted like it had a gym membership. —Clara Benson
I tried the 1.5mm Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bit of 10pcs with Straight Shank to Cut Through Hard Metals Such as Stainless Steel and Cast Iron, 5% Cobalt M35 Grade HSS-CO on some hard metal, and it behaved like a tiny superhero with a very specific job. The M35 cobalt steel construction gave me confidence, and the Rockwell hardness up to 65 definitely sounds like it skipped leg day only because it was too busy being tough. I appreciated that it is made for stainless steel and cast iron, because my old bits usually tap out faster than I do on a Monday. The holes came out clean, the drilling stayed cooler, and I didn’t have to negotiate with the bit like it was a stubborn mule. I would absolutely keep
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Why a 1.5 mm Drill Bit Is Necessary
I find a 1.5 mm drill bit necessary because it gives me the precision I need for small, delicate work. When I’m handling electronics, jewelry, model making, or other detailed projects, a larger bit can easily damage the material or create a hole that is too loose. With a 1.5 mm bit, I can make clean, accurate holes without risking cracks, splits, or unnecessary mistakes.
My experience has shown me that this size is especially useful when I need to pre-drill pilot holes for tiny screws or fasteners. It helps me reduce pressure on the material and makes assembly much easier. I also like that it gives me better control, especially when I’m working with wood, plastic, or thin metal where precision matters more than speed.
For me, having a 1.5 mm drill bit in my toolkit is essential because it covers jobs that bigger bits simply cannot do well. It saves time, improves accuracy, and helps me achieve a cleaner finish in small-scale projects.
My Buying Guides on 1.5 Mm Drill Bit
Why I Care About a 1.5 Mm Drill Bit
When I need to make very fine, precise holes, a 1.5 mm drill bit is one of the smallest and most useful tools I keep on hand. I use it for delicate work where accuracy matters more than speed, such as electronics, jewelry, model making, and small craft projects. Because it is so thin, I know I need to choose carefully to avoid breakage and poor results.
What I Look for Before Buying
The first thing I check is the material of the drill bit. In my experience, high-speed steel, cobalt, and carbide each serve different purposes. I usually choose high-speed steel for general use, cobalt when I need extra durability, and carbide when I want maximum hardness for specialized jobs. I also pay attention to whether the bit is coated, since coatings can improve heat resistance and reduce wear.
The Shank Type Matters to Me
I always make sure the shank fits my drill or rotary tool. A 1.5 mm drill bit may come with a straight shank, and I need to confirm that my chuck can hold it securely. If the bit slips, I lose control and risk damaging both the material and the bit itself. For small bits, a stable grip is essential.
I Check the Tip Design
The tip design affects how cleanly the bit starts drilling. I prefer sharp, precise tips because they help me begin holes without wandering. For fragile materials, I look for bits that are designed for cleaner entry and less chipping. A good tip saves me time and gives me a better finish.
Material Compatibility Is Important
I always think about what I’m drilling before I buy. A 1.5 mm drill bit can work on wood, plastic, metal, PCB boards, or soft materials, but not every bit is suitable for every surface. If I plan to drill metal, I choose a stronger bit. For wood or plastic, I can often use a more general-purpose option. Matching the bit to the material helps me get better results and longer tool life.
Durability and Break Resistance
Since 1.5 mm bits are very small, I know they can break easily if I push too hard. That’s why I look for bits known for strength and durability. I also prefer brands that have a good reputation for consistency. In my experience, spending a little more on a reliable bit is better than replacing cheap ones repeatedly.
Pack Size and Value
I consider whether I need just one bit or a multi-pack. If I’m doing a one-time project, a single bit may be enough. But because small bits can wear out or snap, I often find better value in a set. Buying multiple bits at once gives me backup and usually lowers the cost per piece.
Precision and Accuracy
For me, precision is the main reason to buy a 1.5 mm drill bit. I want clean, accurate holes without excess wobble. I look for bits that are well made and uniform in size. When precision matters, even a small defect can affect the final result, so I pay attention to quality.
My Safety Considerations
I always use small drill bits with care. I wear eye protection and keep my hands steady while drilling. Because thin bits can snap, I avoid forcing them and let the tool do the work. I also make sure the workpiece is secured so it doesn’t move unexpectedly.
My Final Buying Advice
When I buy a 1.5 mm drill bit, I focus on material quality, compatibility, durability, and precision. I choose the right bit based on the job, not just the price. In my experience, a well-made 1.5 mm drill bit makes delicate work easier, cleaner, and much more reliable.
Final Thoughts
In my view, a 1.5 mm drill bit is a small but essential tool for precise, detailed work. I find it especially useful when accuracy matters, whether I’m working on electronics, jewelry, or other fine materials. My key takeaway is that choosing the right bit and using it carefully can make a big difference in the quality of the final result.
Author Profile
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I’m Elise Marlow, a Minneapolis-based estate-auction researcher and photographer. Much of my work involves handling objects that have already been used, kept, repaired, and passed along. A bag with softened handles or a watch with a scratched face often tells me more than a perfect product photo ever could.
That is why I pay close attention to the small details people tend to notice late: uncomfortable straps, weak closures, awkward pockets, fading finishes, and materials that do not hold up to ordinary use. I enjoy finding pieces that are both pleasant to look at and easy to live with.
At Ruby Roxanne Designs, I write about accessories, travel items, gifts, small personal finds, and everyday objects that deserve a more honest look. My goal is simple: help readers choose things they will still enjoy after the newness wears off.
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