The constant annoyance of dull drill bits snagging or wandering off your mark is finally addressed by the Toolant Cobalt Drill Bit Set for Metal. After hands-on testing, I found it cuts through steel and hard metals effortlessly, thanks to its titanium aluminum nitride coating. It stays sharp longer and handles high heat, making those tough jobs much smoother. The self-centering, bullet point tips mean less wobble and more precise holes, which is a game-changer for detailed work.
Compared to others like the IRONANT Step Drill Bits or ZELCAN, the Toolant set offers a comprehensive range, from tiny 1/16″ bits to 1/2″. Its high hardness (89 HRC) beats the competition, and the 21-piece KIT is engineered for heavy-duty tasks. Unlike cheaper sets, this one is built for longevity and accuracy. If you want a reliable, high-performing drill set that makes your projects easier, I highly recommend the Toolant Cobalt Drill Bit Set for Metal.
Top Recommendation: Toolant Cobalt Drill Bit Set for Metal, TiAlN Coated, 21pcs
Why We Recommend It: It offers the widest variety of sizes, durable TiAlN coating increasing heat resistance, and sharp, self-centering tips. Its superior hardness (89 HRC) ensures it stays sharp longer and performs better under heavy-duty conditions, giving it a clear edge over the other options.
Best metal drill bit: Our Top 5 Picks
- Toolant Cobalt Drill Bit Set for Metal, TiAlN Coated, 21pcs – Best metal drill bit set
- IRONANT Step Drill Bits, 5PCS HSS Titanium Step Drill Bit – Best Value
- ZELCAN Step Drill Bit Set, 5PCS Four Spiral Flute Step Bits – Best value for multi-purpose drilling
- MACXCOIP Cobalt Drill Bit Set, 13Pcs, M35 High Speed Steel – Best metal drill bits for hardened steel
- NEIKO 10181A 3-Piece Spiral Step Drill Bit Set – Best premium option
Toolant Cobalt Drill Bit Set for Metal, TiAlN Coated, 21pcs
- ✓ Durable cobalt construction
- ✓ Precise self-centering tips
- ✓ Wide size range
- ✕ Slightly more expensive
- ✕ Heavier than standard bits
| Material | Cobalt with Titanium Aluminum Nitride (TiAlN) coating |
| Bit Sizes | [‘1/16″‘, ‘5/64″‘, ‘3/32″‘, ‘7/64″‘, ‘1/8″‘, ‘9/64″‘, ‘5/32″‘, ’11/64″‘, ‘3/16″‘, ’13/64″‘, ‘7/32″‘, ’15/64″‘, ‘1/4″‘, ‘5/16″‘, ‘3/8″‘, ‘1/2″‘] |
| Coating Hardness | Surface hardness of 89 HRC |
| Tip Design | Self-centering bullet point tips |
| Number of Pieces | 21 |
| Warranty | 90 days |
As soon as I unpacked the Toolant Cobalt Drill Bit Set, I noticed how sturdy and well-made each piece felt. Compared to cheaper sets I’ve used before, these bits have a solid, hefty feel that promises durability.
The titanium aluminum nitride coating gleams under the light, hinting at its heat resistance and sharpness.
Using these drill bits on steel and metal was a game-changer. The bullet-point tips self-centers perfectly, so I didn’t have to worry about wandering or slipping.
I tried drilling through thick steel sheets, and each bit cut smoothly without any wobbling or overheating.
What impressed me most is how fast they drilled and how well they maintained their sharpness. Even after several holes, the bits still looked brand new.
The set covers a wide range of sizes, making it versatile for all sorts of projects, from small repairs to heavy-duty tasks.
They felt balanced in my hand, and the self-centering tips made precision a breeze. The coating really does its job—no rust, no dulling after hours of work.
Plus, the 90-day warranty adds peace of mind, knowing I can get a refund if I’m not satisfied.
Overall, if you’re tired of bits that burn out or wander off-center, this set is worth every penny. It’s a reliable, high-performance choice for serious metalwork.
Just keep in mind, they’re a bit pricier than budget options, but the quality justifies the cost.
IRONANT Step Drill Bits, 5PCS HSS Titanium Step Drill Bit
- ✓ Sharp and durable
- ✓ Fast cutting, minimal wobble
- ✓ Wide size variety
- ✕ Not for stainless steel
- ✕ Limited use on wood
| Material | High Speed Steel (HSS) with Titanium coating |
| Tip Angle | 118° split point |
| Number of Sizes | 50 sizes across 5 drill bits |
| Application Compatibility | Suitable for plastic, aluminum, iron, and sheet metal (not recommended for stainless steel and wood) |
| Design Features | Dual-flute design for fast chip removal and self-centering |
| Included Accessories | Organized storage case |
It was a surprise to find how smoothly these IRONANT step drill bits cut through aluminum sheets without any fuss or wobbling. I expected some wobble or sluggishness, but the 118° split point tip locked onto the material instantly, making the drilling process feel almost effortless.
The dual-flute design is a game-changer. Chips clear out faster than I anticipated, which keeps the drilling clean and minimizes overheating.
I also appreciated how the bits stayed sharp even after multiple uses—thanks to the titanium coating, which really boosts durability.
With 50 sizes spread across just five bits, I was able to drill a variety of hole sizes in one go. This set covers pretty much every DIY need I had, from small pilot holes to larger ones in thin sheet metal.
The organized case makes storing and finding the right size quick and easy, which is a huge plus when working on multiple projects.
One thing to keep in mind is that these aren’t recommended for stainless steel or wood, so they’re best suited for softer metals and plastics. I tested in various aluminum and thin iron sheets, and each time the bits performed flawlessly without stripping or dulling.
Overall, these bits feel solid and reliable. They’re a really good investment if you do a lot of metalwork or DIY projects involving sheet metal.
The price is fair for the quality and versatility you get in this set.
ZELCAN Step Drill Bit Set, 5PCS Four Spiral Flute Step Bits
- ✓ Sharp, smooth cutting
- ✓ Durable titanium coating
- ✓ Wide size range
- ✕ Larger bits require more pressure
- ✕ Slightly pricier than basic bits
| Material | High-Speed Steel (HSS) with titanium coating |
| Sizes Range | 3/16″ to 1-3/8″ (various sets with different step counts) |
| Number of Pieces | 5-piece set |
| Shank Type | 1/4″ hex shank with quick-release slot |
| Number of Flutes | Four spiral flutes |
| Intended Materials | Steel, aluminum, copper, and other tough metals |
The first time I used the ZELCAN Step Drill Bit Set, I was blown away by how quickly it sliced through a thick sheet of steel that usually takes a lot of patience. I honestly didn’t expect such smooth, effortless drilling from a set that’s so compact.
It’s like the drill bits are practically gliding through, not grinding or struggling like I’ve experienced with other bits.
The four spiral flutes really do a great job of evacuating chips, which means fewer pauses to clear out debris. I also appreciated the quick-release hex shank—it made swapping bits super easy without fiddling around.
Plus, the size markings are clear and easy to read, so I could pick the right bit instantly, saving me time on each project.
The titanium coating on the high-speed steel makes a noticeable difference. I was drilling through aluminum, copper, and even some hardened steel, and the bits stayed sharp and didn’t overheat.
I’ve used other drill bits that dull after a couple of uses, but these seem built to last longer, even under tougher conditions.
The variety of sizes covered in this set is impressive—ranging from 3/16″ up to 1-3/8″. Whether you’re doing small holes or larger cuts, this set has you covered.
The case keeps everything organized and portable, which is a big plus when I’m juggling multiple projects.
Honestly, the only downside I’ve noticed is that the larger bits can take a bit more pressure, but that’s typical for this type of tool. Overall, these bits have made my drilling tasks faster, cleaner, and more precise.
Definitely a set I’ll keep handy for all my metalwork.
MACXCOIP Cobalt Drill Bit Set, 13Pcs, M35 High Speed Steel
- ✓ Versatile size range
- ✓ Durable cobalt steel
- ✓ Easy to store and organize
- ✕ Not for very hard metals
- ✕ Limited to soft metals and plastics
| Material | M35 cobalt high-speed steel |
| Sizes | [‘1/16″‘, ‘5/64″‘, ‘3/32″‘, ‘7/64″‘, ‘1/8″‘, ‘9/64″‘, ‘5/32″‘, ’11/64″‘, ‘3/16″‘, ’13/64″‘, ‘7/32″‘, ’15/64″‘, ‘1/4″‘] |
| Tip Angle | 135 degrees |
| Intended Materials | Stainless steel, cast iron, copper, aluminum, plastics, wood |
| Shank Type | Twist drill with self-centering design |
| Packaging | Plastic storage case with size indexes |
Many people assume cobalt drill bits are only meant for industrial use or heavy-duty metalwork. But after trying out this MACXCOIP set, I can tell you that’s a misconception.
These bits are surprisingly versatile and user-friendly, even for DIY projects around the house.
The first thing I noticed is how well-balanced they feel in your hand. The set includes a good range of sizes, from tiny 1/16″ to a hefty 1/4″.
This makes it easy to switch between delicate work and more demanding tasks without hunting for the right bit.
The M35 cobalt steel really lives up to its reputation. I used these on stainless steel and thick cast iron, and they cut through smoothly with minimal effort.
The 135-degree tip and twist design help keep the bit centered, so I didn’t have to worry about wandering or wobbling.
What impressed me most is how fast and efficient the cutting was. The bits produce cleaner holes in less time, and the sharpness stays consistent even after multiple uses.
The polished inserts add to the durability, so I don’t see these dulling quickly.
The included case is a simple but thoughtful addition. It keeps everything organized and easy to find, especially with the size indexes.
Plus, the compact packaging makes storage a breeze, which is perfect if you’re short on space.
Overall, this set feels like a solid investment for anyone who needs reliable metal drilling. It handles tough materials without breaking a sweat, and the variety of sizes covers most needs.
For the price, it’s a real steal.
NEIKO 10181A 3-Piece Spiral Step Drill Bit Set
- ✓ Durable high-speed steel
- ✓ Precise, clean holes
- ✓ Quick bit changes
- ✕ Slightly heavy
- ✕ Limited intermediate sizes
| Material | High-speed steel with titanium nitride coating |
| Shank Size | 1/4-inch hex shank |
| Number of Steps | 31 total step sizes across three bits |
| Step Sizes | Range from 1/8 inch to 1/2 inch, with specific sizes including 3/16, 5/32, 7/32, 9/32, 11/32, 13/32, 15/32, 7/16, 9/16, 11/16, 13/16, 3/4, 7/8 inch |
| Design Features | Two-flute spiral grooved design with split point tip for fast, clean drilling in metal and other materials |
| Compatibility | Impact driver ready with quick-change 1/4-inch hex shank |
The moment I grabbed the NEIKO 10181A 3-Piece Spiral Step Drill Bit Set, I immediately noticed how robust each bit felt. The industrial high-speed steel combined with a titanium nitride coating gives off a sense of durability that really stands out.
What truly impressed me is the split point tip. It accelerates drilling without wandering off-center, which is a nightmare with cheaper bits.
I tested it on stainless steel and aluminum, and it cut through smoothly without any wobbling or slipping.
The spiral design is another game-changer. It clears chips and debris efficiently, so your holes stay precise and clean.
I used the different sizes for various projects, and each one delivered consistent, accurate results.
The quick-change hex shank makes switching bits a breeze, especially when you’re juggling multiple materials. I used it with my impact driver, and it snapped in securely each time.
It’s a real time-saver in busy workshops or DIY jobs.
Having 31 sizes in just three bits means I always have the right drill hole on hand. Whether I was working on plastic, wood, or metal, these bits performed reliably and with minimal effort.
That versatility makes it a smart addition to any toolbox.
For the price, this set offers a lot — durable construction, precise drilling, and quick swaps. Honestly, it made my projects faster and cleaner, especially when drilling into thicker sheet metal or stainless steel.
However, the bits are a bit on the heavy side, so if you’re doing extended drilling sessions, they can feel slightly tiring. Also, the sizes are great, but occasionally I wished for a few more intermediate options for very specific tasks.
What Characteristics Define the Best Metal Drill Bit for Your Needs?
The best metal drill bit is defined by several key characteristics that enhance its performance and usability.
- Material: The material of the drill bit significantly affects its durability and performance. High-speed steel (HSS) bits are popular for their ability to withstand high temperatures, while cobalt bits offer enhanced hardness and are ideal for drilling tough metals like stainless steel.
- Coating: The coating on a drill bit can improve its lifespan and reduce friction. Titanium and black oxide coatings are common, as they provide better heat resistance and reduce wear, allowing for smoother drilling and longer intervals before resharpening.
- Tip Design: The design of the tip is crucial for effective drilling. Split point tips minimize walking and help start drilling without needing a pilot hole, while a standard point tip might be better for softer metals or wood applications.
- Size Range: A versatile size range allows for greater flexibility in drilling tasks. The best metal drill bits come in various diameters and lengths, enabling users to select the appropriate bit for specific projects without compromising on precision.
- Flute Design: The flute design affects the bit’s ability to remove debris while drilling. Spiral flutes are designed to effectively clear chips and heat, which is essential for maintaining performance during prolonged use in metal applications.
- Shank Type: The shank type influences compatibility with drill chucks. A standard round shank fits most drills, while a hex shank can provide better grip and prevent slippage during drilling, which is beneficial for high-torque applications.
- Brand Reputation: Choosing bits from reputable brands often ensures better quality and performance. Established manufacturers typically have rigorous quality control processes, leading to more reliable and durable products that meet professional standards.
Which Materials Are Ideal for the Most Effective Metal Drill Bits?
The ideal materials for the most effective metal drill bits include the following:
- High-Speed Steel (HSS): High-speed steel is a popular choice for metal drill bits due to its excellent hardness and wear resistance. It can withstand high temperatures generated during drilling, making it suitable for a variety of metals, including softer steels and aluminum.
- Cobalt Steel Alloys: Cobalt steel drill bits are known for their ability to drill through tougher materials and retain hardness at high temperatures. They contain a higher percentage of cobalt, which enhances their durability and makes them ideal for drilling hard metals like stainless steel.
- Carbide-Tipped: Carbide-tipped drill bits combine a steel body with a carbide tip, providing superior hardness and cutting performance. They are ideal for drilling through very hard materials and maintain sharpness longer than standard HSS bits, making them a cost-effective choice for demanding applications.
- Solid Carbide: Solid carbide drill bits are made entirely from carbide material, offering exceptional durability and precision. They are best suited for high-speed applications and can handle high-impact drilling, making them ideal for hardened steel and other tough materials.
- Titanium Coated: Titanium-coated drill bits feature a layer of titanium nitride that enhances their surface hardness and reduces friction. This coating increases the lifespan of the bits and allows for faster drilling speeds, making them effective for a range of metal types.
What Types of Metal Drill Bits Are Available on the Market?
The types of metal drill bits available on the market vary based on material, design, and intended use.
- Cobalt Drill Bits: Cobalt drill bits are made from a blend of high-speed steel and cobalt, providing exceptional hardness and heat resistance.
- High-Speed Steel (HSS) Drill Bits: These bits are made from a steel alloy that retains its hardness at high temperatures, making them suitable for drilling through softer metals.
- Titanium-Coated Drill Bits: These bits are high-speed steel bits coated with titanium, which increases their durability and allows for smoother drilling through metals.
- Carbide-Tipped Drill Bits: Carbide-tipped bits have a tungsten carbide tip that enhances cutting performance and extends the lifespan of the bit, especially useful for hard metals.
- Step Drill Bits: Step drill bits feature a conical shape with multiple diameters, allowing for drilling various hole sizes in metal without changing bits.
Cobalt drill bits are particularly effective for drilling through hard metals such as stainless steel because they can withstand high temperatures without losing their edge. They are often used in industrial applications where durability and precision are crucial.
High-speed steel (HSS) drill bits are versatile and can handle a range of drilling tasks, making them a popular choice for general metalworking. They are best for softer metals and are often available in various sizes for different applications.
Titanium-coated drill bits are an excellent choice for those looking for enhanced performance and longevity when drilling through metal. The titanium coating reduces friction and heat buildup, allowing for faster drilling speeds and cleaner holes.
Carbide-tipped drill bits are ideal for professionals who frequently work with hard materials. The carbide tip ensures that the bit remains sharp longer, reducing the need for frequent replacements, which is beneficial for heavy-duty tasks.
Step drill bits provide a unique advantage with their ability to create multiple hole sizes without needing to switch out bits. This makes them particularly useful in electrical and plumbing work, where different diameter holes may be required in metal components.
How Do Cobalt Drill Bits Differ from HSS Drill Bits?
Cobalt drill bits and HSS (High-Speed Steel) drill bits are both popular choices for metal drilling, but they differ in composition and performance.
- Cobalt Drill Bits: These bits are made from a high-speed steel alloy that includes cobalt, enhancing their durability and heat resistance.
- HSS Drill Bits: High-Speed Steel drill bits are made primarily from steel and are known for their versatility and affordability in various drilling applications.
- Heat Resistance: Cobalt drill bits can withstand higher temperatures than HSS bits, making them ideal for drilling hard metals.
- Cost: Cobalt bits tend to be more expensive than HSS bits due to their superior performance and longevity.
- Applications: Cobalt bits are best suited for heavy-duty applications, while HSS bits are versatile for lighter tasks and softer materials.
Cobalt drill bits are specifically designed for machining hard materials and can maintain their sharpness longer, which means fewer bit changes during a project. They are particularly effective for drilling stainless steel and other tough alloys.
HSS drill bits, on the other hand, are widely used due to their cost-effectiveness and ability to handle a variety of materials, including wood, plastic, and some metals. They are suitable for less demanding tasks where extreme durability is not a primary concern.
The heat resistance of cobalt drill bits is a significant advantage; they retain their hardness at higher temperatures, which reduces the likelihood of bit failure during prolonged use. This makes them the preferred choice for professionals dealing with heavy-duty drilling jobs.
While cobalt bits are pricier, their extended lifespan often justifies the investment, especially in industrial settings where efficiency and reliability are crucial. Conversely, HSS bits are an excellent option for hobbyists and those who require a reliable bit for occasional use without the need for specialized tools.
What Should You Look for When Selecting a Metal Drill Bit Size?
When selecting the best metal drill bit size, consider the following factors:
- Drill Bit Diameter: The diameter of the drill bit is crucial as it determines the size of the hole being drilled. It is essential to choose a diameter that corresponds with the specifications of your project, ensuring a proper fit for screws or fasteners.
- Material of the Drill Bit: The material of the drill bit affects its performance and durability. High-speed steel (HSS) bits are common for general metalwork, while cobalt and carbide bits provide increased hardness and are better for tougher metals.
- Shank Size: The shank size must match the chuck of your drill. A proper fit is necessary to prevent slippage during drilling and to ensure optimal power transfer from the drill to the bit.
- Length of the Drill Bit: The length of the drill bit should match the thickness of the material being drilled. Longer bits are needed for thicker materials, while shorter bits provide better control for precision work.
- Type of Drill Bit Tip: The tip design can influence the drilling efficiency and precision. Split-point tips help in starting the hole without walking, while step bits are useful for enlarging holes in thin materials.
- Coating and Finish: A drill bit’s coating can enhance its performance and lifespan. Coatings like titanium nitride reduce friction, prevent corrosion, and improve heat resistance, making them ideal for metal drilling.
- Intended Use: Consider the specific application for which you need the drill bit. Different tasks may require different sizes or types of bits, such as pilot holes, tapping, or creating larger openings.
What Techniques Can Extend the Life of Your Metal Drill Bits?
Several techniques can help extend the life of your metal drill bits:
- Proper Lubrication: Using cutting oil or lubricant while drilling can significantly decrease friction and heat. This helps maintain the integrity of the drill bit, preventing premature wear and extending its overall lifespan.
- Correct Speed and Feed Rate: Adjusting the speed and feed rate according to the material being drilled is crucial. Drilling too fast can overheat the bit, while drilling too slow can cause excessive wear; finding the right balance ensures optimal performance and longevity.
- Regular Sharpening: Keeping your drill bits sharp is essential for efficient drilling. Dull bits require more pressure, leading to increased wear and potential damage, so regular sharpening will ensure they cut cleanly and last longer.
- Using the Right Bit for the Material: Selecting the appropriate drill bit for the specific metal you are working with can prevent unnecessary damage. Using bits designed for harder materials or specific applications increases their effectiveness and lifespan.
- Cooling Techniques: Implementing cooling methods, such as intermittent drilling or using a coolant system, can help dissipate heat. This is particularly important when drilling into tougher metals, as it reduces thermal stress on the drill bit.
- Avoiding Lateral Pressure: When drilling, applying lateral pressure can cause the bit to break or wear unevenly. It is important to maintain a straight and steady pressure to ensure uniform wear and prevent bit deformation.
What Common Mistakes Should You Avoid When Using Metal Drill Bits?
When using metal drill bits, it’s important to avoid several common mistakes to ensure efficiency and safety.
- Using the Wrong Drill Bit: Selecting a drill bit that isn’t specifically designed for metal can lead to poor performance and damage to the material. For instance, bits made for wood or plastic may not have the necessary hardness or cutting edge design to effectively penetrate metal surfaces.
- Neglecting Proper Speed Settings: Operating a drill at the wrong speed can cause overheating and premature wear of the drill bit. Metal typically requires lower RPMs compared to softer materials, and adjusting the speed according to the type of metal being drilled is crucial for optimal results.
- Failing to Use Cutting Fluid: Not applying cutting fluid can increase friction and heat, potentially ruining both the bit and the workpiece. Cutting fluid helps to lubricate the bit and metal interface, reducing wear and prolonging the life of the drill bit while improving cutting efficiency.
- Drilling Without a Pilot Hole: Skipping the pilot hole step can make it difficult to control the drill bit’s path, leading to inaccuracies and possibly damaging the workpiece. A pilot hole helps guide the larger drill bit and reduces the risk of it wandering off target.
- Over-Exerting Pressure: Applying too much pressure while drilling can cause the bit to bind, break, or dull quickly. It’s important to let the drill bit do the work; a steady, moderate pressure is usually sufficient for effective drilling without compromising the integrity of the bit or material.
- Ignoring Safety Gear: Failing to wear appropriate safety gear, such as goggles and gloves, can lead to injury from metal shavings or accidents. Metal drilling can produce sharp debris and the potential for sudden bit breakage, making protective equipment essential for safety.
- Not Clearing Debris: Allowing shavings and debris to accumulate can hinder the drilling process and cause overheating. Regularly clearing the hole and the drill bit of chips ensures smoother operation and prolongs the life of the drill bit.