Best Cobalt Drill Bits for Precision and Durability in 2026

Drill bits that dull too fast or snap under heat can turn simple tasks into a mess. Hard metals chew through regular bits, leaving you stuck or wrecking your work.

BOSCH CO14B offers a robust M42 alloy with 8% cobalt, built for longevity and heat resistance in tough metals. AMOOLO’s 31-piece set uses industrial-grade M35 steel with 5% cobalt, focusing on sharper edges and chip clearance for less friction.

GMTOOLS fills the gap for those needing nearly as much versatility as Amoolo but with a metal case and a focus on split-point precision.

Essential Guide to Selecting the Best Cobalt Drill Bits for Metalwork

Mastering metal drilling requires the right tools built for toughness and precision. These cobalt drill bit sets excel in heat resistance, durability, and performance, ideal for demanding projects.

1. Bosch CO14B 14-Piece Cobalt M42 Drill Bit Set with Durable Case for Metalwork

Drilling through hard metals can quickly wear down ordinary bits, but these cobalt alloy pieces stand apart with high heat resistance and an upgraded M42 cobalt composition. Whether you’re tackling stainless steel or titanium, the enhanced alloy with 8% cobalt holds up against heat and abrasion for extended use.

The thick web-helix design boosts durability and stability during tough applications, preventing bending and breakage where precision matters most. Also, the surface-hardened tip ensures clean starts and efficient penetration into abrasive materials.

Bosch thoughtfully crafted this set with a variety of sizes, from 1/16″ up to 1/2″, to handle different projects without swapping tools mid-job. The included case keeps everything organized and protected.

Thanks to the three-flat shank design, slipping in the chuck is quick and secure, improving your control over tough jobs. Each bit features a 135-degree split point, reducing walking and improving accuracy on hard surfaces.

Best for: Professionals and hobbyists working with stainless steel, cast iron, titanium, and light-gauge metals requiring long-lasting, heat-resistant drill bits.

Pros:

• Durable M42 cobalt alloy with 8% cobalt for extended life
• Resistant to high temperatures during heavy use
• Thick web-helix for enhanced stability
• Surface-hardened tip for quick, precise starts
• Comes with a protective carrying case for convenient storage

Cons:

• The high-strength design might be overbuilt for simple, occasional drilling tasks

2. amoolo 31-Piece M35 High Speed Steel Metal Drill Bit Set with Case, 1/16″-1/2″

Exploring tougher materials often reveals drill bits that struggle to keep pace under pressure. Amoolo’s set stands apart by harnessing industry-grade M35 cobalt steel, delivering significantly enhanced hardness and longevity compared to standard HSS bits. These bits incorporate 5% cobalt to maintain sharpness and resist wear even through the hardest metals.

Each drill bit sports a fully ground spiral groove designed to remove debris efficiently, lowering friction and heat buildup for a cooler, faster drilling experience. The 135° split point and straight round shank help reduce walking and boost precision—no punch needed to get started.

Versatility is built-in with a broad range of 31 sizes, tailored to fit most drills and applications, from stainless steel to wood and plastic. Amoolo ensures you have the right tool on hand to tackle everything from sheet metal to cast iron without slowing down.

The included portable plastic case keeps all bits organized and within easy reach. Practical and dependable, amoolo’s kit redefines what you expect from a metal drill bit set.

Best for: Professionals and hobbyists dealing with hardened metals and mixed materials who require reliable, precision-cutting drill bits.

Pros:

• M35 cobalt steel boosts durability and wear resistance
• 135° split point prevents bit walking and improves accuracy
• Wide size assortment fits most drill types and applications
• Spiral design clears chips for cooler drilling
• Compact case for neat storage and transport

Cons:

• May demand careful speed and pressure control when cutting very hard materials

3. GMTOOLS 29-Piece High-Speed Steel Cobalt Drill Bit Set with Metal Case, 1/16″ to 1/2″

The sharp 135° split point penetrates materials quickly and reduces slipping, ensuring your drilling starts exactly where you intend. Each bit features a twist design that efficiently clears debris for smoother progress and less downtime during projects.

Crafted with enhanced M35 alloy steel containing 5% cobalt, these bits offer increased resistance to wear and heat, making them last longer under demanding conditions. The superior hardness surpasses many standard high-speed steel options, providing durability across different surfaces.

A universal round shank design fits tightly in a wide array of tool holders, offering versatility no matter the equipment setup. You’ll appreciate the precision grinding process that delivers cleaner surfaces and better accuracy on every hole drilled.

GMTOOLS includes a sturdy metal indexed storage case that keeps the 29 drill bits neatly organized and easy to access, whether you’re on a job site or in the workshop. The set covers a comprehensive range of sizes from 1/16″ to 1/2″, accommodating various project needs.

Experience excellent chip clearance, enhanced durability, and precise drilling control with every use.

Best for: Professionals and hobbyists requiring a reliable, long-lasting set capable of handling metal, wood, and plastic.

Pros:

• Sharp 135° split points for accurate starting without walking
• Enhanced M35 cobalt alloy for improved wear and heat resistance
• Comprehensive 29-piece size range from 1/16″ to 1/2″
• Universal round shank compatible with various tool holders
• Durable metal storage case for organized transport and storage

Cons:

• Metal storage case might add slight weight for portability
• May require more care with plastics to avoid melting during drilling

4. DEWALT 14-Piece Cobalt Alloy Steel Drill Bit Set with Pilot Point for Metal and Wood

Working with tough materials calls for drill bits that can keep pace without losing sharpness. These bits feature a cobalt alloy steel build that handles alloy steel, stainless steel, and other metals with enduring toughness. The 135-degree point angle ensures clean starts and reduces walking on hard surfaces.

Patented bit-bar design lets you remove and organize bits easily, customizing placement for your workflow. The clear lid offers quick visual access, cutting down downtime when searching for the right size. A secure clip latch keeps all 14 pieces neatly contained during transport and storage.

Optimizing space comes naturally thanks to a compact bulk storage that fits into DEWALT’s ToughCase+ systems (sold separately), perfect for keeping your drills ordered and accessible. Two-flute spiral edges facilitate smoother drilling and better chip removal through dense materials.

DEWALT’s attention to detail means a pilot point design that reduces slippage even on slick metals, letting you focus on precision. With a lightweight set weighing just over 360 grams, handling these bits is both manageable and efficient through extended projects.

Best for: Professionals and hobbyists requiring durable, high-performance bits for drilling through metal and wood with enhanced precision and ease.

Pros:

• Durable cobalt alloy steel for long-lasting sharpness
• 135-degree pilot points minimize walking on tough surfaces
• Patented bit-bar for easy removal and customized sorting
• Compact storage design fits ToughCase+ systems
• Spiral flutes improve chip clearance and drilling efficiency

Cons:

• Storage case sold separately, which might be inconvenient for some
• Set focuses primarily on metalworking, so may be less versatile for other materials

5. NordWolf 5-Piece M35 Cobalt Steel Stubby Drill Bit Set with 1/4″ Hex Shank for Metals

Struggling to drill in cramped, hard-to-reach spots often leads to frustration and subpar results. NordWolf’s compact drill bits, measuring just under 2.5 inches, slip effortlessly into tight spaces while maintaining impressive strength. Their stubby design isn’t just shorter; it’s purpose-built for maneuvering where standard bits fall short.

Crafted from durable M35 cobalt steel, these bits maintain sharpness longer and drill with consistent precision. The 135° split point tips focus on self-centering, reducing walking and enabling faster penetration into tough materials. Spiral flutes efficiently evacuate debris, helping maintain drilling speed.

Designed for versatility, this set handles a variety of hardened metals including stainless steel, cast iron, and titanium. The 1/4-inch hex shank fits both quick-change chucks and impact drivers, making swapping bits seamless across different tools.

Every size is neatly organized in a labeled plastic case featuring a sliding clip for convenient storage and easy access. NordWolf has engineered these bits to offer exceptional durability, compact maneuverability, and broad compatibility.

Best for: Professionals and hobbyists needing precision drilling in dense metals and cramped spaces.

Pros:

• Durable M35 cobalt steel for extended bit life
• Stubby length allows access to tight and confined areas
• Self-centering 135° split point greatly reduces bit walking
• Compatible 1/4″ hex shank fits quick-change and impact drivers
• Convenient storage box with size labeling and pegboard clip

Cons:

• Limited to smaller diameters in this set, which may require other sizes for larger holes
• Bit stubby length could reduce leverage for extremely deep drilling tasks

6. HIDOTOL 115PCS M35 High Speed Steel Drill Bit Set with Indexed Metal Case for Hardened Metals

Drilling into tough materials often tests the limits of standard bits, leading to frequent replacements and frustrating slowdowns. The HIDOTOL set packs 115 expertly crafted pieces designed to overcome these common obstacles with ease.

Engineered from premium M35 high-speed steel containing 5% cobalt, these bits bring enhanced durability and a longer operational life even against hardened metals like stainless steel and titanium alloys. The 135° split point design promotes precise starts and helps avoid bit walking, allowing you to drill cleaner, faster holes.

A fully ground twist design accelerates chip removal while reducing heat and friction for a consistently cooler cutting action. Each drill bit features a round shank for secure gripping and smooth rotation.

With sizes spanning fractional diameters, letter, and numbered wire gauges, this collection covers an expansive range of applications neatly contained within an indexed metal case by HIDOTOL.

Best for: Professionals and hobbyists who tackle challenging materials and require a versatile, long-lasting set organized for quick access.

Pros:

• Constructed from M35 cobalt high-speed steel for extended bit life
• 135° split point reduces walking for enhanced drilling accuracy
• Efficient chip clearing with fully ground twist flutes
• Comprehensive size assortment with fractional, letter, and wire gauge bits
• Sturdy metal case with size indexing for tidy storage

Cons:

• Weight and metal case size may feel bulky for some users preferring compact kits
• High-performance design may exceed basic needs for casual drilling tasks

7. Narwhal Industrial Grade M35 Cobalt Drill Bits Set, 13-Pack with Storage Case

Dealing with hard metals often means drill bits wear out faster than you’d expect. Achieving clean, precise holes requires tools designed to handle tough materials without losing sharpness or accuracy. Narwhal’s 13-piece set, crafted from industrial-grade M35 cobalt, tackles this challenge head-on.

Engineered with a fully ground 135° split point, these bits pierce through stainless steel, hardened steel, cast iron, and more with minimal effort. The precise cutting angle prevents walking and reduces heat buildup, keeping the drilling process efficient and controlled.

Each bit measures 1/8 inch in diameter, with a flute length optimized for durability and chip removal. The straight shank design ensures compatibility with a wide range of drills, while the included plastic storage case keeps your bits organized and protected during transport or storage.

Narwhal’s commitment to quality shines through the cobalt composition that offers enhanced wear resistance, allowing you to maintain sharp edges longer than standard bits. Whether you’re tackling metal fabrication or detailed automotive projects, these bits bring reliability and precision to every hole.

Best for: Craftsmen and professionals needing durable drill bits that stand up to frequent use on tough metals.

Pros:

• Industrial-grade M35 cobalt offers superior hardness and heat resistance.
• Fully ground 135° split point for precise and clean drilling.
• Compact 13-pack accommodates extended use and replacements.
• Durable plastic case for organized, safe storage.
• Versatile usage across metals like stainless steel and cast iron.

Cons:

• The straight shank might not suit specialized drill chucks for some users.
• Uncoated finish could require lubrication on very hard metals to reduce wear.

8. toolant Heavy-Duty Cobalt Steel Drill Bit Set with TiAlN Coating and Precision Tips, 21-Piece

Drilling through tough metals often demands more than just sharp bits—it requires resilience against intense heat and wear. toolant answers this challenge with its 21-piece set engineered for precision and durability.

Each bit features a titanium aluminum nitride coating that boosts surface hardness to 89HRC, allowing for fast cutting speeds while maintaining sharp edges. This heat-resistant layer helps prevent wear during extended use on hardened steel or stainless materials.

The bullet point tip design centers the drill bit automatically, reducing wandering and delivering highly accurate hole placement. A 3-flat shank ensures steady grip and improved torque transfer for demanding drilling tasks.

Spiral flutes with a 135-degree point angle optimize chip removal and minimize friction, helping to extend the lifespan of each cobalt steel drill bit. The varied size assortment covers diameters from 1/16″ to 1/2″, suitable for diverse metalworking projects.

toolant’s collection stands out in heavy-duty scenarios by balancing hardness with precision engineering, making it a smart choice for professionals and metal enthusiasts alike.

Best for: Metal fabricators, machinists, and anyone working with hardened steel or stainless materials requiring reliable, clean drilling results.

Pros:

• Durable cobalt steel core with enhanced heat resistance
• Precise self-centering bullet point tips reduce bit wander
• Titanium aluminum nitride coating lengthens bit life
• Wide range of sizes for versatile applications
• 3-flat shanks improve grip and drilling stability

Cons:

• Could require careful handling to prevent breaking thin bits
• Might be overbuilt for light household drilling tasks

9. Yougfin 29-Piece Metal Drill Bit Kit with M35 Cobalt High-Speed Steel for Hardened Metals

Drilling through tough metals demands a bit that stays sharp and cool under pressure. Yougfin’s set features 29 sizes spanning from 1/16″ to 1/2″, tailored to tackle hardened steel, stainless steel, and alloy metals with ease.

Crafted with 5% cobalt in M35 steel, these bits offer higher red hardness and superior wear resistance. They resist overheating better than standard high-speed steel, extending cutting life during rigorous use.

The 135° split point tip accelerates cutting by engaging more edge earlier, while the spiral flute design efficiently removes metal shavings, preventing clogging and ensuring cleaner holes. Adding a bit of cooling lubricant enhances cutting performance further.

Housed in a durable indexed case, this drill bit collection suits DIYers and metalworkers, offering the precision and resilience needed for demanding projects. Yougfin brings reliability to your toolkit for home improvement and beyond.

Best for: Professionals and hobbyists needing durable bits to drill harder metals like stainless steel and alloy steel cleanly and efficiently.

Pros:

• Wide range of 29 drill sizes for versatile applications
• High wear resistance with 5% cobalt content
• 135° split point for quicker, more accurate starts
• Spiral flutes remove debris effectively
• Includes durable storage case for organization

Cons:

• May require cooling lubricant application to optimize lifespan
• Could be less optimal for softer materials where standard bits suffice

10. Drill America 29-Piece M42 Cobalt Drill Bit Set with Gold Oxide Finish in Compact Case

Crafting precision holes in hardened metals demands more than common drill bits. Designed to cut through materials like stainless steel, titanium, and Inconel, these cobalt tools maintain superior hardness even at elevated temperatures. Red hardness resistance allows you to drill at speeds up to 30% faster than traditional high-speed steel bits.

Equipped with a gold oxide coating, the bits reduce friction while enhancing wear resistance for extended life. The unique M42 cobalt alloy balances toughness and durability, ensuring your bits stay sharp through demanding tasks.

Round shanks provide compatibility with a broad range of tool holders, making this set adaptable for diverse setups. Its ergonomically designed round case offers easy portability, allowing you to carry it comfortably by hand or clip it to your belt on job sites.

Drill America’s 29-piece grouping includes increments from 1/16″ to 1/2″ in 1/64″ steps, ideal for projects requiring fine size selections. The split point and spiral flute design contribute to smooth chip removal and reduced walking at start-up.

Best for: Professionals and serious hobbyists working with tough alloys who need a durable, precise drill bit collection that withstands high heat and hard materials.

Pros:

• High red hardness permits faster drilling speeds
• Gold oxide finish minimizes wear and lubricates bits
• M42 cobalt steel extends tool life under stress
• Wide size range with fine increments
• Convenient, portable round case with belt clip option

Cons:

• Round shank may require adapter for some tool holders
• Precision increments may be more than casual users need

Key Specs Compared: Top Cobalt Drill Bits for Metalwork

Product Name	Material & Cobalt %	Set Size & Diameter Range	Shank Type	Point Style & Cutting Angle
BOSCH Cobalt M42 14-Pc	M42 alloy, 8% Cobalt	14 pcs; 1/16″–1/2″	3-Flat	Split Point, 135°
AMOOLO M35 31-Pc Set	M35 steel, 5% Cobalt	31 pcs; 1/16″–1/2″	Straight	Split Point, 135°
GMTOOLS M35 29-Pc Set	M35 steel, 5% Cobalt	29 pcs; 1/16″–1/2″	Straight	Split Point, 135°
DEWALT Alloy 14-Pc Set	Cobalt Alloy Steel	14 pcs; sizes from 3 mm	Straight	Pilot Point, 135°
NordWolf M35 Stubby 5-Pc	M35 steel	5 pcs; 3/32″–5/16″	Hex	Split Point, 135°
HIDOTOL M35 115-Pc Set	M35 steel, 5% Cobalt	115 pcs; 1/16″–1/2″, letters & wire sizes	Round	Split Point, 135°
Narwhal M35 13-Pc 1/8″ Only	M35, 5% Cobalt, Uncoated	13 pcs; 1/8″ diameter only	Straight	Split Point, 135°
toolant TiAlN Coated 21-Pc	M35 steel, 5% Cobalt	21 pcs; 1/16″–1/2″	3-Flat	Pilot Point, 135°

What Makes the Best Cobalt Drill Bits Stand Out?

Picking the right cobalt drill bits isn’t just about grabbing any set off the shelf. The right bit can mean the difference between clean, precise holes and frustrating wear or breakage. Several key factors influence performance, longevity, and ease of use when working with tough metals.

Material Composition and Cobalt Percentage

The core of cobalt drill bit durability lies in the material composition and the actual percentage of cobalt alloyed into the steel. Typically, M35 steel contains 5% cobalt, while premium options like M42 boast 8% cobalt. This cobalt boosts heat resistance and hardness, enabling the bit to withstand the intense friction and heat generated during metal drilling. For instance, Bosch’s M42 bits with 8% cobalt maintain sharpness far longer on stainless steel than standard high-speed steel alternatives.

Technically, cobalt acts as a hardening agent, increasing the alloy’s tensile strength and thermal stability. When drilling at high speeds, this mix helps keep edges sharper and prevents premature wear or chipping. Higher cobalt content means better resistance to abrasion but can also make the bit more brittle if overdone, so balance is key.

Ignoring the cobalt percentage often leads to rapid dulling and bit failure, especially on hardened steels and titanium. Cheap bits with little or no cobalt simply can’t hold up to sustained drill workloads, causing you to replace bits frequently and waste time and money.

Drill Bit Point Design and Cutting Angle

The angle and shape of a drill bit’s point determine how easily and accurately it starts a hole. Most quality cobalt bits feature a 135-degree split point, which minimizes walking and ensures sharper penetration. Others, like DEWALT’s set, use a pilot point to create clean starts on tougher metals and wood. The split point design is especially useful for preventing the bit from slipping on smooth surfaces.

This angle reduces the axial force required to push the bit and spreads the cutting load over a wider cutting edge, balancing cutting efficiency and durability. The split-point geometry also helps clear chips away, reducing heat buildup during drilling. For example, Bosch’s thick web-helix design complements the 135° angle by improving structural stability during tough cuts.

Overlooking point design results in more wandering on metal surfaces, increased wear from friction, and inconsistent hole placement. This can ruin precision work, waste materials, and shorten bit life substantially.

Bit Length and Stubby Designs for Accessibility

Length matters when working in constrained or deep spaces. Standard cobalt bits typically range up to 2-3 inches in length, but stubby or compact bits, like NordWolf’s 5-piece set, measure under 2.5 inches for better maneuverability. These short bits are essential in cramped areas where a full-length bit won’t fit or flex may cause breakage.

Technically, shorter bits reduce torque-induced bending and absorb less vibration while penetrating hard substrates. NordWolf’s hex shank stubby bits also benefit from improved grip in drill chucks, reducing slippage during use. However, longer bits still offer versatility when depth is required, and their design needs to balance rigidity with drill survivability.

Ignoring bit length suited for the task means struggling with damaged bits, limited reach, or compromised hole quality. In tight spots, a full-length drill is a pain point that stubby bits solve gracefully, saving time and frustration.

Shank Type and Compatibility with Drill Chucks

The shank design affects how well the drill bit locks into your drill and transmits torque. Straight shanks are common and fit most drill chucks, but 3-flat or hex shanks offer better grip to prevent slippage. For example, Bosch’s 3-flat shank design increases stability for demanding metalwork.

Hex shanks, like those found on NordWolf’s stubby bits, enhance torque transfer and are often compatible with quick-change drill chucks or impact drivers. This reduces the risk of bit spinning inside the chuck under pressure, which helps maintain consistent drilling speed and accuracy. Proper shank design also aids in faster bit changes during projects.

Choosing the wrong shank type for your drill means struggling with loose bits or frustrating pauses to tighten and reposition. Poor grip increases wear on both the bit and drill chuck, leading to uneven drilling and potential failure.

Coating and Heat Resistance Treatments

Hard metals generate immense heat during drilling, which can quickly degrade untreated bits. Advanced cobalt drill bits often feature surface treatments like titanium aluminum nitride (TiAlN) coatings, adding an extra heat-resistant layer. Toolant’s bits with TiAlN coatings reach surface hardness up to 89 HRC, allowing faster cuts and longer life.

These coatings act as thermal barriers, minimizing heat buildup and improving abrasion resistance. They also reduce friction, making drilling smoother and less taxing on the user and the bit. Coated bits retain sharper edges longer in tough conditions compared to uncoated bits, which dull faster and may require frequent replacements.

Skipping coated or treated bits means accepting more frequent sharpening or discarding of drill bits. It also limits drilling speed and precision when working with high-temperature metals like stainless steel or titanium alloys.

Set Size and Diameter Range for Project Versatility

The number of drill bits in a set and the range of diameters included directly impact how well the set can handle varied tasks. Larger sets, such as HIDOTOL’s 115-piece kit, cover everything from tiny 1/16″ sizes to 1/2″ and include specialty letter and wire gauge sizes. Smaller kits focus on common sizes but may lack flexibility.

Technically, having a wide diameter range prevents the need to buy individual bits later. A diverse set allows one to cover metalworking, automotive, and general fabrication projects without hassle. Multiple piece counts ensure you have spares on hand as bits wear or break—a normal part of metal drilling.

Ignoring set size and diameter range often leads to frequent interruptions buying single bits, wasted money, or using improper bit sizes that damage materials or tools. Adequate selection ensures readiness for any drilling challenge.

Frequently Asked Questions

What makes cobalt drill bits better for metalworking?

Cobalt drill bits contain a specific percentage of cobalt alloy that provides superior heat resistance and toughness. This prevents the bits from dulling quickly when drilling hard metals like stainless steel or titanium. For example, 8% cobalt in Bosch M42 bits greatly enhances their lifespan compared to standard HSS bits.

The cobalt content improves durability by increasing hardness and abrasion resistance, making them well-suited for repeated use on tough materials.

Pro tip: Use bits with higher cobalt content for extended metal drilling tasks to reduce frequent replacements.

How does the point angle affect drilling performance?

The point angle determines how sharply and accurately a bit penetrates the material without slipping. A 135° split point is common for cobalt bits, offering a balanced design that reduces walking and ensures cleaner starts on metals.

For instance, DEWALT’s bits feature a 135-degree pilot point for smooth penetration on both metal and wood, which helps improve accuracy on hard surfaces.

Avoid bits with blunt angles when precision is needed, as they tend to wander before cutting.

Are stubby cobalt drill bits worth using?

Stubby cobalt drill bits are shorter than regular ones, offering improved control and easy access in tight spots. Their compact build helps you work where longer bits struggle, like in cramped or awkward angles.

This design also means less bit flex, which cuts down the chance of breakage during tough jobs, especially overhead or confined drilling tasks.

Though not suited for deep holes, these bits bring better maneuverability and precision, making them a great choice for metalworking that demands detailed, careful drilling.

What role do coatings like TiAlN play on cobalt drill bits?

Coatings such as Titanium Aluminum Nitride (TiAlN) enhance surface hardness and heat resistance, allowing bits to perform faster and last longer under stress. The toolant 21-piece set uses TiAlN to achieve a surface hardness of 89HRC, protecting bits during high-speed drilling on hardened metals.

These coatings also reduce friction and wear, maintaining sharper edges for improved efficiency.

Use coated bits when working with very abrasive or heat-sensitive materials for maximum durability.

How important is the shank type for using cobalt drill bits?

Shank type affects bit stability and compatibility with your drill chuck. For instance, Bosch uses a 3-flat shank design to prevent slipping and improve torque transfer, while many cobalt sets rely on straight or hex shanks.

Hex shanks, like those on the NordWolf stubby set, facilitate quick bit changes and better grip in impact drivers.

Choose the shank type based on your drill’s chuck and the nature of your projects to avoid bit slippage and ensure safety.

Getting the Most from Cobalt Drill Bits

Choosing the right bit size is key to efficient drilling. Oversized bits can break easily, while undersized ones slow down progress.

Cobalt content impacts how well bits handle heat. Higher percentages mean they last longer under intense friction. Cooling your workpiece during extended drilling preserves the bit’s sharpness. Avoid pushing too hard; instead, use slow, steady pressure to prevent bending or snapping.

By storing drill bits in their original cases, you keep the tips sharp and ready for future projects, ensuring longer-lasting performance on tough metals.

Last update on 2026-05-06 / Affiliate links / Images from Amazon Product Advertising API