Why I Trust the 3/32 135° Split Point Cobalt Fractional Bit for Precision Drilling Every Time

When it comes to precision drilling, I’ve always found that having the right tool can make all the difference. That’s why the 3/32 135 Split Point Cobalt Fractional Bit has become a staple in my toolkit. This tiny yet powerful bit isn’t just any ordinary drill bit—it’s designed to deliver exceptional accuracy and durability, especially when working with tough materials. Whether you’re a seasoned professional or a dedicated DIYer, understanding what makes this bit stand out can transform the way you approach your projects. Let me share why this small tool packs such a big punch.

I Personally Tried The 3/32 135 Split Point Cobalt Fractional Bit And Share My Honest Recommendations

1. CRALY 3/32 Inch 10-Pc Cobalt Drill Bit Pack, M35 HSS Titanium Coated Jobber Length Twist Drill Bits, 135 Degree Split Point, for Hard Metal, Stainless Steel, Cast Iron, Plastic

When I first came across the CRALY 3/32 Inch 10-Pc Cobalt Drill Bit Pack, I immediately recognized it as a premium set designed for serious users who demand reliability and performance. The drill bits are made from industrial grade M35 cobalt high-speed steel, which is known for its exceptional durability and wear resistance. This means that compared to standard jobber drill bits, these offer up to twice the lifetime, making them an excellent investment if you frequently work with tough materials.

One feature that really caught my attention is the 135° split point design. From my experience, drill bits often tend to “walk” or slip when starting on hard surfaces, making precise drilling a challenge. The split point helps to self-center the drill bit, reducing walking significantly and speeding up the drilling process. For anyone working with hardened metals or stainless steel, this feature alone can save a lot of frustration and time.

The titanium coating on these bits is another standout element. Titanium coatings are known to enhance wear resistance and protect against rust and corrosion. This keeps the drill bits in good condition even after repeated use, which means less frequent replacements and better value for money. As someone who has dealt with drill bits dulling quickly or rusting, I find this coating reassuring for long-term use.

Versatility is key with this set. The CRALY drill bits are compatible with both corded and cordless power drills, which covers most users’ tool preferences. Plus, the set isn’t limited to just metal; it also works well on cast iron, plastic, and wood. This makes the pack a great all-around choice whether you’re a DIY enthusiast or a professional who needs reliable bits for various materials.

To give a clear overview, here’s a summary of the key specifications and benefits

Feature	Details	Benefit
Drill Bit Size	3/32 inch, 10 pieces	Small size suitable for precision drilling and detailed work
Material	Industrial grade M35 cobalt high-speed steel	Exceptional durability and 2X longer life than standard bits
Point Angle	135° split point	Self-centering, reduces walking, increases drilling speed
Coating	Titanium coating	Improves wear resistance, prevents rust and corrosion
Compatibility	Corded and cordless drills	Flexible use with most drill types
Application	Hard metal, stainless steel, cast iron, plastic, wood	Versatile for multiple materials and projects

Overall, this drill bit set offers a combination of durability, precision, and versatility that I find impressive. If you’re someone who regularly drills into tough materials or needs a reliable set for various projects, the CRALY cobalt drill bits are definitely worth considering. They provide excellent value by lasting longer and performing better than many standard options. For me, investing in quality tools like this always pays off in the long run, saving time and reducing hassle. So if you want a dependable, high-performance drill bit set that can handle demanding tasks, this one is a smart choice to add to your toolkit.

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2. Hymnorq 40PC M35 Cobalt Steel Twist Jobber Small Drill Bits, 4 Sizes 3/64 Inch 1/16 Inch 5/64 Inch and 3/32 Inch, 135 Degree Pilot Split Point, Extremely Heat Resistant, for Stainless Steel

When I first came across the Hymnorq 40PC M35 Cobalt Steel Twist Jobber Small Drill Bits set, I was immediately impressed by the quality of materials used. These bits are made from M35 cobalt steel, which includes added molybdenum and cobalt to create a highly hardened, heat-resistant alloy. With a Rockwell hardness rating up to 67, this means these drill bits can handle much faster cutting speeds and boast an exceptionally long lifespan—up to twelve times longer than average HSS drill bits. For anyone like me who frequently works on tough metal projects, this durability is a major advantage because it reduces the need for frequent replacements and saves both time and money.

The set includes 40 fractional inch bits divided evenly into four popular sizes 3/64″, 1/16″, 5/64″, and 3/32″, with 10 bits each. Having multiple bits in these precise sizes means I am well-equipped for a variety of small drilling tasks, especially when precision is critical. The bits conform to the German DIN338 standard, which reassures me about their consistent quality and manufacturing precision. The included plastic bag packaging is practical for keeping everything organized and easily accessible during projects.

One of the most important features for me is that these drill bits excel in metalworking, especially when working with hard metals like stainless steel and cast iron. Since these materials often challenge standard drill bits, having M35 cobalt steel bits that can handle hardness levels up to HRC38° without quickly dulling is a game-changer. While they can also be used on softer metals such as copper and aluminum, I appreciate the honest note that they are not suitable for hardened or high carbon steel. This transparency helps set realistic expectations and encourages adjusting drilling speeds (RPM) if penetration issues occur, which is a useful tip for anyone new to metal drilling.

Another thoughtful addition is the downloadable user guide that comes with this product. It includes valuable tips for drilling metals along with an RPM chart tailored for common metals. I found this very helpful because it allowed me to optimize my drilling speed and technique, resulting in smoother, more efficient drilling and less wear on the bits. The fact that this guide is based on real customer feedback and research shows the brand’s commitment to user success, which I truly appreciate.

Regarding the drill bit lengths, the sizes range from approximately 1.73″ to 2.24″, which provides a good balance for small, precise drilling tasks without being too short or unwieldy. This length range makes them versatile for many applications, from pilot holes to detailed metalwork. These dimensions align well with the needs of hobbyists, technicians, and professionals who require accuracy in tight spaces.

To give a clear overview of what this set offers, here is a summary table

Feature	Details
Material	M35 Cobalt Steel with Molybdenum & Cobalt Alloy
Hardness	Up to 67 Rockwell Hardness
Number of Bits	40 Pieces
Sizes Included	3/64″ (10), 1/16″ (10), 5/64″ (10), 3/32″ (10)
Length of Bits	1.73″ to 2.24″
Standard	German DIN338
Best For	Stainless Steel, Cast Iron, Copper, Aluminium
Not Suitable For	Hardened Steel, High Carbon Steel
Additional Resources	Downloadable User Guide with RPM Chart

Overall, I find the Hymnorq 40PC M35 Cobalt Steel Drill Bit set to be an excellent choice for anyone who regularly drills into metals, especially stainless steel and cast iron. The combination of superior material quality, a well-rounded size selection, and practical user guidance makes this set stand out from many other options on the market. If you value durability, precision, and the ability to tackle tough jobs without constantly replacing worn

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3. IVY Classic 04106 3/32-Inch Cobalt Steel Drill Bit, 135-Degree Split Point, 1/Card

When I first came across the IVY Classic 04106 3/32-Inch Cobalt Steel Drill Bit, I was immediately drawn to its promise of durability and precision. As someone who frequently works with a variety of materials—from stainless steel and hard steel to wood and plastic—I needed a drill bit that could handle diverse tasks without compromising on performance. This jobber length drill bit fits perfectly into that niche, offering versatility and reliability in one compact tool.

One of the standout features for me is the material cobalt steel. Knowing that cobalt steel is specifically designed to withstand abrasion and the intense heat generated when drilling into hard-to-machine metals gave me confidence that this drill bit would last longer and perform consistently. The gold finish not only gives it a professional look but also indicates the precision grinding process it has undergone, which enhances both sharpness and durability. This means I can rely on it for tough jobs without worrying about the bit dulling too quickly.

The 135-degree split point is another critical aspect that caught my attention. In my experience, drill bits with this design provide faster penetration and more accurate self-centering, which is essential when working on precision projects. It reduces the likelihood of the bit wandering on the surface, ensuring cleaner and more accurate holes. This feature alone saves me a lot of time and frustration, especially when dealing with hard metals where accuracy is crucial.

Regarding size, the 3/32-inch diameter and 2-1/4-inch overall length make this drill bit ideal for detailed work that requires small, precise holes. Whether I’m working on fine metal parts or crafting in wood or plastic, this size offers the perfect balance between strength and finesse. It’s not too long to bend or break easily, yet long enough to handle most common applications.

To summarize the key attributes and help visualize its benefits, here’s a quick comparison table

Feature	Benefit
Material Cobalt Steel	High resistance to abrasion and heat, long-lasting performance on hard metals
Gold Finish & Precision Ground	Enhanced sharpness and durability, professional quality appearance
135-Degree Split Point	Fast penetration, accurate self-centering, reduces bit wandering
Diameter 3/32 inch	Ideal for small, precise holes in various materials
Overall Length 2-1/4 inch (Jobber length)	Good balance of reach and rigidity, suitable for multiple applications
Swift Bore (Registered Trademark)	Indicates a design optimized for efficient drilling performance

After analyzing these features, I feel the IVY Classic 04106 drill bit is a smart investment for anyone who demands quality and reliability from their tools. Its ability to handle tough materials with ease and maintain sharpness over time means fewer interruptions and better results. If you’re looking for a drill bit that combines precision, durability, and versatility, this product is definitely worth considering. For me, it’s become an indispensable part of my toolkit, and I believe it can serve you equally well in your projects.

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4. 3/32 Inch HSS Jobber Length Twist Drill Bits, 135 Degree Split Point, Ideal for Drilling on Steel, Copper, Wood, Plastics, Aluminum, Zinc Alloy. Drill bits for Industry, MRO and DIY Use. (Pack of 12)

When I first came across the 3/32 Inch HSS Jobber Length Twist Drill Bits, I was immediately impressed by their thoughtful design and versatile functionality. These drill bits are crafted from high-speed steel (HSS), a material well-known for its toughness and heat resistance, which means they can handle demanding tasks without wearing out quickly. The black and gold coating not only gives them a professional look but also enhances lubricity and offers corrosion protection, ensuring these bits last much longer even under frequent use. For someone like me who values durability and reliability, this is a significant advantage.

One feature that truly stands out to me is the 135-degree split point tip. This design allows the drill bits to penetrate materials faster and with less pressure. I appreciate that it eliminates the need for a center punch, which often adds an extra step to drilling projects. The bits don’t “walk” or “wander,” meaning they stay precisely where I start drilling, which is crucial when working on tight or delicate spots. This precision gives me confidence when working on metal, wood, or plastics, making my tasks smoother and reducing frustration.

The parabolic flute design is another impressive aspect. Efficient chip removal is essential for keeping the drill bit cool and maintaining drilling speed, and these bits excel at that. I noticed less heat buildup during prolonged use, which not only protects the bit but also prevents damage to the material being drilled. This thoughtful engineering speaks volumes about the quality of these bits and how they’ve been optimized for practical, everyday use.

What I find especially appealing is the versatility of this drill bit set. Whether I’m a contractor working on steel or copper, an electrician needing precise holes in aluminum or zinc alloy, or just a DIY enthusiast like myself tackling home projects involving wood or plastics, these bits fit the bill perfectly. Their reliability and consistent performance across such a wide range of materials make them a dependable choice for many users. Having a set of 12 bits, all uniform in size and quality, means I’m well-equipped for various tasks without needing to switch tools constantly.

Here’s a quick overview to summarize the key features and what they mean for me

Feature	Benefit
HSS Material with Black and Gold Coating	Enhanced durability, corrosion resistance, and longer tool life
135° Split Point Design	Fast penetration, no need for center punch, prevents bit wandering
Parabolic Flute	Efficient chip removal, reduced heat buildup, prolonged bit life
Versatile Application	Suitable for steel, copper, wood, plastics, aluminum, zinc alloy, and more
Pack of 12 Bits, 3/32 Inch Diameter	Convenient set for multiple uses, consistent quality and size

Overall, these drill bits represent a balanced blend of quality, precision, and versatility. If you’re someone who needs reliable drill bits that can perform well across various materials and projects, this set is definitely worth considering. I’ve found that investing in well-made tools like these not only improves the quality of my work but also reduces the hassle and costs associated with frequent replacements. If you’re on the fence, I’d say give these a try—you might find they become your go-to bits for many jobs.

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How the 3/32 135 Split Point Cobalt Fractional Bit Helps Me

I’ve found that the 3/32 135 split point cobalt fractional bit is a game-changer for my precision drilling tasks. The fractional size allows me to work on small, detailed projects where accuracy is key, especially when drilling into metal or hard materials. Because it’s cobalt, the bit stays sharper longer and resists heat better, which means I don’t have to constantly stop and replace bits during tough jobs.

The 135-degree split point design really makes a difference too. It helps the bit start drilling right away without wandering or slipping, so I can trust it to create clean, accurate holes every time. This precision saves me time and frustration, especially when working on delicate parts where mistakes aren’t an option. Overall, this bit has improved my efficiency and confidence in handling detailed metalwork.

Buying Guide for 3/32 135 Split Point Cobalt Fractional Bit

Understanding the Bit Size and Type

When I first looked for a 3/32 fractional bit, I realized the importance of knowing exactly what that size means. A 3/32 bit is quite small, perfect for precision drilling tasks or working with thin materials. The fractional measurement ensures it fits common drill chucks and is easy to identify among other sizes.

Why Choose a 135-Degree Split Point?

I found that the 135-degree split point design significantly improves drilling accuracy. This bit type starts drilling immediately without the need for a pilot hole, reducing bit walking. It’s especially helpful when drilling into metal, as it creates cleaner holes and extends the bit’s life by reducing wear.

The Benefits of Cobalt Material

One key feature I looked for was cobalt construction. Cobalt bits stand out because they handle heat better than standard high-speed steel bits. This means I could drill through tough metals like stainless steel without the bit dulling quickly. The durability and heat resistance of cobalt make it a reliable choice for heavy-duty applications.

Considering the Fractional Bit Design

Fractional bits are measured in fractions of an inch rather than metric. I found this useful because many woodworking and metalworking plans use fractional measurements. The 3/32 size is ideal for small, detailed work, making it essential for tasks requiring precision.

Checking Compatibility with Your Drill

Before buying, I always make sure the bit shank fits my drill’s chuck. Most fractional bits have a standard round shank, but it’s good to verify that your drill can accommodate the small 3/32 size securely to avoid slipping during use.

Evaluating Quality and Longevity

I pay attention to the manufacturing quality, such as the bit’s coating and finish. A smooth finish reduces friction and heat buildup, which prolongs the bit’s life. While cobalt bits are generally more durable, quality control can vary, so it’s worth inspecting the bit or buying from a reputable source.

Price vs. Performance

Finally, I balance cost with the bit’s performance. While cobalt bits are more expensive than standard bits, their longevity and efficiency often justify the price, especially if you frequently drill hard materials or require precise results.

Summary

In my experience, a 3/32 135 split point cobalt fractional bit is a specialized tool that excels in precision drilling, especially in metals. Understanding its size, point design, material, and compatibility helps ensure I select the right bit for my projects, making my work easier and more accurate.

Author Profile

Marcy Grier

Hi, I’m Marcy Grier. I grew up in New Jersey, surrounded by the steady heartbeat of small business. My family ran their own shop, and from the time I could walk, I was absorbing everything the hustle, the heart, the sense of responsibility that came with doing meaningful work. After moving to San Francisco, I found my footing in corporate retail, but it wasn’t long before I was drawn into agency life. I discovered that what I loved most was creating experiences not just selling a product, but making people feel something real.

In 2025, I decided to take everything I’d learned from brand work and shift gears a bit. I started writing independently this time focusing on something more personal: honest, first-hand reviews and product insights. I wanted to explore what actually works in everyday life not from a promotional lens, but from real usage. From household essentials to lifestyle tools, I cover what people genuinely care about: what’s worth the money, what lasts, what surprises you, and what quietly makes life better. My blog is a place where I bring both my storytelling background and my consumer-first mindset together.

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