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Chances are you are not shopping for a 1/8 inch drill bit because you enjoy buying drill bits. You are probably mid-project, staring at a stripped screw, a snapped bit, or a piece of metal that refuses to give in. The right 1/8 inch bit turns a stripped screw into a two-minute fix; the wrong one sends you back to the store.
I’m Min — the founder and writer behind Gadgets Feed. This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
Your 1/8 inch drill bit choice can turn a quick pilot hole into a long afternoon, especially if you’re drilling into stainless steel. Choosing the right bit cuts project time and frustration.
Our Picks at a Glance
How To Choose The Best 1/8 Inch Drill Bit
The material you plan to drill is the single biggest factor in your choice. A cheap bit can zip through pine, but the same bit will scream and glow red against a hardened steel bolt. Matching the bit’s steel to the material makes the job easier.
Know your steel: HSS, Cobalt, and Carbide
Standard high-speed steel (HSS) is fine for wood and soft metals. Cobalt M35 contains 5% cobalt, which lets it hold an edge while drilling stainless steel and cast iron at higher temperatures. Solid carbide is the hardest of the three and cuts through abrasive and hardened materials, but it is also more brittle and demands a rigid setup.
The 135° split point matters more than you think
A split point tip is ground so the bit self-centers the moment it touches the surface. That means it will not wander or “walk” across a slick piece of metal before it bites. It also lets you start a hole without a center punch, which saves time and keeps your pilot hole exactly where you want it.
Quick Comparison
| Model | Best For | Material | Point Angle | Flutes | Amazon |
|---|---|---|---|---|---|
| DEWALT DW1308★ Best Overall | All-around durability | Titanium Nitride | 135° | 2 | Amazon |
| LU&MN M35 CobaltMetal-Cutting Value | Hard metal value | M35 Cobalt HSS | 135° | 2 | Amazon |
| SALI CobaltOrganized 10-Pack | Organized 10-pack | Cobalt HSS | 135° | 2 | Amazon |
| Lichamp 3-Flute | Fast chip clearing | Cobalt Steel | 135° | 3 | Amazon |
| BECOLLO 20-Piece | Bulk steel drilling | Cobalt Steel | 135° | 1 | Amazon |
| Drill America DWDCO | Premium 12-pack | Cobalt | Jobbers’ | 2 | Amazon |
| Mudder 30-Piece | High-volume use | M35 Cobalt HSS | 135° | — | Amazon |
| RCINDUS 20-Piece | Precision DIY work | M35 Cobalt | 135° | 2 | Amazon |
| Drill America DMOD | Hardest materials | Solid Carbide | 118° | 2 | Amazon |
In‑Depth Reviews
1. DEWALT DW1308 Titanium Nitride Split Point Bit
Our pick — over 4.5★ from 350+ verified ratings; the strongest balance of quality and price.
The single bit that refuses to dull, even after constant everyday use.
Buyers report that the coating on this bit (a 0.13 inch / 3.18 mm cutting diameter titanium nitride finish) makes it an exceptional all-rounder. The story told most often is of a single bit being used for every project in its size, with the owner waiting for it to finally dull — and it never does. Its 135° split point self-centers instantly, so you skip the center punch step entirely.
The two-flute design clears wood chips and soft-metal shavings cleanly, which keeps the bit cool and the hole round. At just 9.07 g, it feels feather-light in the chuck, and the titanium nitride coating (a hard, gold-colored surface layer) is what buys you that extended cutting life versus a plain steel bit.
This is the pick that shows why quality beats quantity: the crowd favorite here sits at 4.7 stars from close to 400 owners. Buyers emphasize its exact compatibility with standard power drills and report the two-pack arrives ready to drop into any kit where a bit snapped. The trade-off is that this is a wood-and-soft-material specialist; reach for a cobalt bit when hardened steel shows up.
What wins people over
- The titanium nitride coating gives noticeably longer cutting life than uncoated steel.
- The 135° split point starts holes on target without a center punch.
- The two-pack replaces broken kit bits at a fair price.
Who should grab steel instead
- This is not the bit for hardened steel or stainless — it excels in wood and soft metal.
- Durability gets a mix of feedback, with a few owners wanting even more wear resistance.
Reach for this if: you want one dependable bit for wood, plastic, and soft metal that keeps its edge for months.
Look elsewhere if: your project involves hardened steel, where a cobalt or carbide bit will outlast it.
2. LU&MN M35 Cobalt Jobber Drill Bits 10-Pack
The 10-pack that chews through stainless steel without breaking a sweat.
While the DEWALT above is a wood specialist, this LU&MN set flips the script toward metal. The M35 high-speed steel with 5% cobalt is what lets it handle the heat of drilling stainless steel, and the fully ground flute design clears chips fast to keep friction low. Owners mention that a single bit drilled all 8 holes in a John Deere bucket and stayed “just as sharp on the 8th as the first.”
The 135° split point is the standout feature here — it prevents “walking” on hard surfaces and requires less downward pressure, which is exactly what you want when starting a hole in slick sheet metal. The round shank ensures it locks into any standard drill chuck or drill press without fuss.
This set earns a 4.5-star consensus across over 650 owners, with the cutting performance being the most-praised trait. The honest caveat: heat is the enemy of stainless steel drilling, and one owner found the smallest bit broke after about a minute of aggressive use. Feed it steady pressure, let the bit do the work, and keep the speed moderate.
Why it earns its keep
- The 5% cobalt content lets it slice through stainless where standard bits just skate.
- The split point gives clean, precise starts with less pressure.
- A 10-pack means you have backups when you need them most.
The honest limit
- Durability is a mixed bag — a small bit can snap if you push too hard or let it overheat.
- The 0.13 inch diameter demands patience on thick steel plates.
Best for: the DIYer who regularly faces stainless steel, cast iron, and other hard metals and wants a spare-ready 10-pack.
Skip it: for pure woodworking, where a titanium-coated bit like the DEWALT is smoother.
3. SALI Cobalt Drill Bit Set 10-Pack
A rugged indexed case and 10 cobalt bits that take the guesswork out of hard-metal drilling.
The headline here is the molded storage case — it has the bit size printed right on the lid, so you grab the 1/8 inch bit without squinting at a row of near-identical steel rods. Inside, the M35 high-speed steel with 5% cobalt (the 3.18 mm cutting diameter) targets stainless steel, cast iron, and sheet metal with authority.
A retired industrial tool salesman vouches for these as “as good as any drill bit I have ever used” — high praise from someone who sold them professionally. The 135° split point with a straight shank means you can start drilling precisely without a center punch. The fully ground spiral groove pulls particles out quickly, which keeps friction and heat down.
At 4.5 stars across over 350 owners, the quality is the most-praised trait. The honest trade-off: sharpness and durability are a mixed bag, with one owner reporting it took 3 bits and 40 minutes to get through a single stainless bolt. That is the nature of hardened steel — it taxes every bit. For soft metals, wood, and plastic, this set is a strong, organized value.
This kit is the pick for a tidy shop with clearly labeled bits.
Tidy and tough: the printed-size case lid plus 5% cobalt steel makes this the set you grab for a mix of metal and wood projects.
One fair caution: budget-priced bits dull faster on hard metals, so treat stainless steel with patience and cutting oil.
4. Lichamp 3-Flute Cobalt Drill Bits 10-Pack
The patent 3-flute geometry that clears chips faster than any standard twist bit.
Most drill bits have two flutes (the spiral grooves that pull debris out of the hole). Lichamp’s 3-flute design is the differentiator here — the extra cutting edge clears chips and particles quicker, which means less friction, less heat, and a noticeably smoother drilling experience on tough alloys. Customers note drilling through thick welded Subaru floorboard in under two minutes after other brands dulled on the same steel.
The M35 cobalt steel with 5% cobalt is rated to withstand up to 1100 degrees Fahrenheit, so it holds up when the cutting gets hot. The 135° split point self-centers and prevents skating on hard surfaces. The 10-pack includes the 1/8-inch diameter bit in a clear, well-organized plastic case.
This 4.4-star set across over 340 owners has owners praising the three cutting edges, with one calling them the best bits tested across four brands. The durability feedback is mixed — one owner reported 20 holes in 3/16″ galvanized steel per bit before needing a pilot hole. That is solid performance for the price tier.
Where it shines
- The 3-flute design clears chips faster than standard 2-flute bits.
- The M35 cobalt steel withstands up to 1100 degrees Fahrenheit without losing its edge.
- It cut through hardened steel screws and even broken extractors.
Know before you buy
- Durability is a mixed bag — a bit can dull after heavy use on galvanized steel.
- The 0.12-inch cutting diameter means patience on thick plate.
Grab this if: you tackle tough alloy metal and want faster chip clearing from a 3-flute design.
Consider another: if your work is mostly wood, where the extra flute is unnecessary.
5. BECOLLO 20-Piece Cobalt Drill Bit Set
Twenty cobalt bits that turn a brutal steel job into a single-bit afternoon.
If you have a heavy project coming up — a fence, a trailer, a steel frame — this 20-piece set is your ammunition. The M35 cobalt (5%) high-speed steel construction prolongs bit life, and the fully ground surface reduces friction for faster cutting. One owner built a 6-foot-high, 24-foot fence using only a single bit from this pack. This set’s endurance is proven by a single bit surviving a full fence build.
The 135° split point gives you the same self-centering advantage as the others, preventing the bit from skating across the surface. At 0.13 inches cutting diameter, these are jobber-length 1/8 bits. The set ships in a plastic case that keeps all 20 organized for easy carrying.
The 4.6-star rating from over 800 owners makes this a crowd favorite, and the quality is the single most-praised aspect by a wide margin. Reviewers point out drilling through brake rotors and 1/4-inch steel without issues. The trade-off: durability runs mixed, with occasional reports of easily broken bits, and the jobber length is too long for some Vix bit holders — keep them for general steel work.
Compared to the LU&MN 10-pack above, this doubles your bit count for a bit more money, making it the smarter buy for anyone planning sustained metal drilling.
Why it leads on value
- 20 bits for the price others charge for 10.
- One bit survived an entire 24-foot fence build.
- Sharp edges that stay sharp longer than expected on steel.
The fit warning
- Jobber length is too long for some Vix bit holders.
- A few owners note bits can break if you push too hard.
Choose this when: you have a large steel project and want enough bits to finish it without a mid-job restock.
Pass it up: if you only need a bit or two for occasional woodwork.
6. Drill America DWDCO Cobalt Drill Bit 12-Pack
The gold-oxide 12-pack trusted for titanium and zirconium work.
This is the set that moves from weekend DIY into serious metalworking territory. The cobalt steel (with more cobalt than standard high-speed steel) is built for stainless steel and nickel alloys, and the gold oxide finish is the industry’s visual marker for cobalt steel tools. Shoppers say using these as their go-to bits for drilling titanium and zirconium — materials that destroy standard steel bits.
Manufactured to National Aerospace standard 907, these bits are held to a higher tolerance than typical consumer bits. The round shanks fit a wide variety of toolholding systems, and the 2-flute spiral design evacuates chips up and out of the cut to stop clogging. If you run them in a counterclockwise direction, the right-hand cut clears debris efficiently.
The 4.6-star rating from over 800 owners reflects a lot of happy metalworkers. The quality and performance are the most-praised aspects, with one owner noting they stay sharp even drilling through 16 and 18 gauge galvanized steel. The honest caveat: two of the twelve in one pack arrived with a bad grind — a quality-control slip that slipped past inspection. Most owners see all 12 perfect, but it is worth checking each bit before a critical job.
The pro-grade edge
- Aerospace-standard manufacturing (907) means tight tolerance.
- Gold oxide finish identifies true cobalt steel.
- Handles titanium, zirconium, and galvanized steel with ease.
The small risk
- An occasional unit slips through with a bad grind.
- Durability is mixed — heavy use on abrasive steel wears any bit eventually.
Worth it for: anyone drilling exotic or hardened metals who wants aerospace-grade consistency in a 12-pack.
Skip it: for basic woodwork, where the premium cobalt is wasted.
7. Mudder 30-Piece M35 Cobalt Drill Bit Set
Thirty M35 cobalt bits for the jobs where you expect to break a few.
This 30-piece set is built for high-volume work where bits are consumables. The M35 cobalt high-speed steel (with 5% cobalt) delivers heat and abrasion resistance, and the 135° split point keeps the bit self-centering on hard surfaces. Buyers report drilling through multiple layers of metal roofing at once, with the bits staying sharp longer than the competition.
The creative twist design with 135° split point tip improves cutting speed and clears chips quickly. These bits work with lithium electric drills, hand drills, and impact drills. The set targets hardened metals like cast iron, stainless steel, and titanium alloy, though it also handles wood and plastic.
This set earns 4.4 stars from over 900 owners, so it’s been put through real jobs. Buyers praise the quality, but two honest warnings stand out: some report the bit size isn’t exactly 1/16 inch as expected, and the full-hardened steel flute (the spiral groove that removes debris) can snap if you bind it in a hole. That’s why owners buy them in bulk — they expect to break a few on stubborn screws and bolts.
This is your set for removing a thousand old deck screws. Bring patience with speed and pressure.
The bulk advantage: 30 bits mean you never pause a project to restock, and the M35 cobalt handles metal roofing and hardened screws.
The brittleness note: these cut deep but snap if you bind them — steady pressure is the rule.
8. RCINDUS 20-Piece M35 Cobalt Drill Bit Set
Factory-direct M35 cobalt with diameter accuracy down to -0.03mm.
This set is built for precision work. The 3.175mm (0.13 inch) cutting diameter is the spec to trust on this one.
The 135° split point provides automatic centering and prevents walking on hard surfaces. Owners mention drilling clean holes through hard drives, phones, and PCBs — electronics work that demands precision and sharp edges. One owner called these the best drill bits ever used, outperforming DeWalt, Milwaukee, and Ryobi titanium bits that dulled or broke on the same material.
The 4.6-star rating from over 800 owners is backed by the quality and value-for-money being the two most-praised aspects. The honest trade-off: the bits are very sharp but will break easily with any side load. That means keep the drill straight and let the bit do the work. The 20-piece count in a plastic case makes this a strong choice for both professionals and DIYers.
Why precision fans love it
- Diameter accuracy controlled within -0.03mm for exact 1/8-inch holes.
- Factory-direct M35 material goes through full grinding and hardening.
- Drills through hard drives, phones, and PCBs cleanly.
The sharpness caution
- Very sharp but brittle — side load snaps a bit fast.
- Durability runs mixed, with some breaking after 25-30 holes.
Pick this if: you need precision holes in electronics, stainless steel, or alloys and want 20 spares.
Skip it: for rough framing work where you expect to abuse the bit.
9. Drill America DMOD Solid Carbide Drill Bit
The solid carbide bit that cuts through case-hardened bolts like butter.
This is the specialist’s specialist. The 0.13-inch solid carbide bit is designed for abrasive materials and high-temperature drilling applications where accuracy must be maintained — cast iron, non-ferrous alloys, high silicon aluminum, copper, plastics, bronze, hard rubber, and plexiglass. Customers note it cutting through case-hardened bolts “like butter” when every other bit in the drawer just skated across the surface.
Solid carbide offers longer tool life and faster cutting speeds than any steel substrate, which is why it is the go-to for hardened steel. But that performance comes with a critical condition: carbide is more brittle than steel. It must be used in a rigid tool-holding system — this is not a bit for a wobbly hand drill on a ladder. The 118° point angle is ground specifically for this harder, more brittle material.
The 4.2-star rating from over 900 owners reflects a real split. The quality and functionality are the most-praised aspects, with owners successfully drilling through 5160 spring steel and removing broken bolt extractors. The honest risk: one owner snapped the bit on the very first use on a wood cabinet — carbide demands the rigid setup it was designed for. Most reviewers point out chipping rather than breaking, and getting it sharpened keeps it working.
Compared to the cobalt bits above, this single carbide bit costs more but outlasts them all on the absolute hardest materials.
The hardest-worker edge
- Solid carbide cuts through case-hardened steel, spring steel, and broken extractors.
- Longer tool life and faster cutting speeds than any steel bit.
- Handles high-temperature drilling on abrasive materials.
The rigidity requirement
- Brittle — it will snap if used in a wobbly, non-rigid setup.
- One owner broke it on the first use in wood; not a do-it-all bit.
This is your bit if: you face hardened steel, spring steel, or broken extractors that destroy every steel bit you own.
Skip it: for everyday wood and soft metal — the brittleness is a liability there.
Understanding the Specs
Cutting Angle and Point Style
The point angle is the angle at the tip of the bit. A 135° split point — found on most of these bits — self-centers on contact, so it won’t walk or skate across a hard surface before it bites. A standard 118° point is the traditional grind, but the 135° split point is the modern choice for precise starts on metal without a center punch.
Flute Count and Design
Flutes are the spiral grooves that pull chips and debris out of the hole as you drill. Most bits have 2 flutes; the Lichamp uses 3 for faster chip clearing. The more flutes, the quicker debris escapes, which means less friction and heat — but it also means a slightly different cutting feel. Fully ground flutes (as opposed to rolled) give a smoother, more accurate cut.
FAQ
Can a 1/8 inch cobalt bit drill through hardened steel?
What is the difference between a 118° and a 135° split point?
How many holes will a 1/8 inch cobalt bit drill in steel?
Will a solid carbide bit work in a regular hand drill?
Why do my 1/8 inch bits keep breaking?
What is a jobber length drill bit?
Is titanium nitride coating better than cobalt for drill bits?
How do I know which 1/8 inch bit fits my drill chuck?
Should I buy a 10-pack or a single high-end bit?
Final Thoughts: The Verdict
For most people, the 1/8 inch drill bit winner is the DEWALT DW1308 because it pairs a titanium nitride coating (a hard, gold-colored layer that reduces friction) with a 135° split point (a self-centering tip that prevents wandering) at a price that makes it the obvious everyday pick. If you need to drill into stainless steel or hardened metal, choose the LU&MN M35 Cobalt 10-pack instead. And for the hardest materials that wear out every steel bit you own, the Drill America DMOD Solid Carbide is the one to grab.
How We Picked
We do not accept paid placement. Every pick is matched to a real buyer and a real use-case; we do not hands-on test units.
Sources & Methodology
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews, as of August 2026. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
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