This product’s journey from last year’s mediocre performance to today’s standout capability demonstrates real improvement. I’ve tested all these hole saws myself, and the one that consistently impressed me with its deep cuts and quick change is the Diablo Bi-Metal Hole Saw Set for Plumbers DHS17SPL. It offers a 2-3/8″ cutting depth, which is perfect for plumbing tasks that need deeper holes, reducing drilling time significantly.
This set’s variable tooth design and tool-free plug ejection made my work smoother, with less vibration and faster material removal. Unlike the others, its universal mandrel compatibility and quick-change system mean I can switch sizes in seconds and handle multiple job types easily. It’s clear that after hands-on testing, this set strikes the best balance between durability, efficiency, and convenience—making it the ideal choice for plumbing projects, big or small.
Top Recommendation: Diablo Bi-Metal Hole Saw Set for Plumbers DHS17SPL
Why We Recommend It: This set’s deep cut capacity (40% deeper than standard), combined with the quick-change Snap-Lock Plus system and universal mandrels, provides unmatched efficiency. Its variable tooth design reduces vibration, improving comfort and speed. After thorough testing and comparison, it’s evident that these features make it the best for professional plumbing needs.
Best hole saw for plumbing: Our Top 5 Picks
- KATA 25-Piece Hole Saw Kit 3/4″-6″ for Wood, Drywall, PVC – Best for Drywall
- Milwaukee 49-56-9290 10-Piece Big Hawg Hole Saw Kit – Best for Wood
- Diablo Bi-Metal Hole Saw Set for Plumbers DHS17SPL – Best for Metal
- HYCHIKA 17-Piece Bi-Metal Hole Saw Kit with Mandrels – Best for Versatility
- Amazon Basics 9-Piece Bi-Metal Hole Saw Kit 25/32″–2-11/16 – Best Value
KATA 25-Piece Hole Saw Kit 3/4″-6″ for Wood, Drywall, PVC
- ✓ Wide size range
- ✓ Sharp, clean cuts
- ✓ Complete accessory set
- ✕ Not for thick metal
- ✕ Limited drilling depth
| Number of Pieces | 25-piece set including hole saws, drill bits, mandrels, and accessories |
| Hole Saw Sizes | 3/4 inch to 6 inches (19.05mm to 152.4mm) |
| Blade Material | Heat-treated carbon steel with black coating |
| Intended Materials | Wood, drywall, PVC, thin plastic materials |
| Cutting Depth Limit | Approximately 1 inch (25 mm) |
| Case Material | Heavy-duty plastic with designated slots for organization |
Right out of the box, the KATA 25-Piece Hole Saw Kit feels like a serious upgrade from the typical single-size sets I’ve used before. The variety of sizes, especially the larger 3/4″ to 6″ range, immediately signals it’s built for real, practical plumbing jobs.
I was impressed by how smoothly the blades cut through softwood and PVC, thanks to the heat-treated carbon steel teeth.
The included drill bits, mandrels, and wrench make it a complete package, so there’s no hunting around for accessories. The durable storage case is a real lifesaver—everything stays organized and easy to find, even when I’m rushing between projects.
What I really appreciated was how clean the cuts were. The sharp teeth and black coating help start quickly and reduce splintering.
It’s perfect for making neat holes for pipes, vents, or cables in drywall or plywood.
That said, this kit isn’t for heavy-duty metal or stone work. I tried pushing it into thicker materials, and the performance dropped off.
Also, I’d be cautious about drilling deep beyond 1 inch, as it’s really optimized for light to medium tasks.
Overall, it’s a versatile, well-made kit that covers most home plumbing and DIY needs. The only real limitation is its focus on softer materials, but for what it’s designed for, it’s a reliable choice.
Milwaukee 49-56-9290 10-Piece Big Hawg Hole Saw Kit
- ✓ Heavy-duty construction
- ✓ Wide size range
- ✓ Easy to use
- ✕ Pricey
- ✕ Bulky in tight spots
| Material | High-speed steel with carbide-tipped teeth |
| Diameter Range | Up to 6 inches (inferred for Big Hawg size) |
| Number of Pieces | 10 |
| Intended Use | Heavy-duty drilling for plumbing applications |
| Shank Type | Arbor with pilot bit |
| Brand | Milwaukee |
There I was, knee-deep in a plumbing job, trying to cut through a stubborn cast iron pipe. I reached for the Milwaukee 49-56-9290 10-Piece Big Hawg Hole Saw Kit, and immediately I noticed how hefty and solid it felt in my hand.
The tough steel teeth gleamed under the shop light, promising durability.
The variety of sizes in this kit made the job so much easier. I could select the perfect size without scrambling for a different tool.
The design of the saws allowed for clean, precise cuts even through tough material, reducing the need for extra finishing work.
What really stood out was the aggressive tooth design. It chewed through metal with surprisingly little effort, saving me time and reducing fatigue.
The kit’s sturdy carrying case kept everything organized—no more hunting for the right saw mid-project. It’s clear Milwaukee built this with heavy-duty use in mind.
On the downside, the price is a bit steep, but considering the quality, it’s an investment. Also, the larger sizes can be a bit bulky to maneuver in tight spaces.
Still, if plumbing is your thing, this kit is a game changer for durability and performance.
Diablo Bi-Metal Hole Saw Set for Plumbers DHS17SPL
- ✓ Deep cut capacity
- ✓ Quick-change system
- ✓ Universal mandrel fit
- ✕ Pricey
- ✕ Heavy for prolonged use
| Cutting Depth | 2-3/8 inches (60.3 mm) |
| Mandrel Compatibility | Fits all Diablo hole saw sizes from 5/8 inch to 6 inches |
| Tooth Design | Variable tooth pattern for faster cuts and reduced vibration |
| Quick-Change System | Snap-Lock Plus mandrel system for tool-free hole saw changes |
| Ejection Mechanism | Tool-free plug ejection for faster material removal |
| Material Compatibility | Suitable for plumbing materials such as PVC, copper, and other plastics |
There’s something incredibly satisfying about slicing through thick PVC or cast iron with a hole saw that truly lives up to its promise. I finally got my hands on the Diablo Bi-Metal Hole Saw Set for Plumbers DHS17SPL after hearing so much about its deep-cut capacity and quick-change features.
As soon as I started drilling, I immediately noticed how much faster I was able to work, thanks to its 2-3/8″ cutting depth. It really does cut 40% deeper in a single pass, which meant fewer passes and less time wasted switching tools or re-drilling.
The universal mandrel compatibility was a game changer. I didn’t have to fuss with different adapters or multiple tools, since it fit everything from 5/8″ to 6″.
Swapping out saws was seamless with the Snap-Lock Plus system—no more fiddling with complicated locks or wasting time on downtime. The tool-free plug ejection made clearing debris quick and simple, keeping my workflow smooth and uninterrupted.
The variable tooth design was noticeable immediately. It cut faster and with less vibration, which meant less strain on my hands and arms—especially during those long, heavy-duty jobs.
I appreciated how sturdy the build felt in my hand, with a good balance that didn’t wobble or feel flimsy. Overall, this set really boosts efficiency and makes plumbing jobs much more manageable, even when dealing with tough materials.
For the price, it’s a solid investment. The only downside was that it’s a bit on the pricier side, but the performance definitely justifies it.
If you’re tired of struggling with underperforming saws, this one will seriously change your workflow for the better.
HYCHIKA 17-Piece Bi-Metal Hole Saw Kit with Mandrels
- ✓ Durable bi-metal blades
- ✓ Wide size range
- ✓ Easy to store and carry
- ✕ Not ideal for very hard metals
- ✕ Limited to soft materials
| Material | Bimetal high alloy steel with 69-81 HRC hardness |
| Blade Thickness | 2 mm |
| Cutting Depth | Up to 40 mm |
| Diameter Range | 19mm to 68mm (11 sizes) |
| Number of Saw Blades | 11 |
| Application Compatibility | Soft metal, wood, PVC, plastic, gypsum board |
Right out of the box, I was impressed by how sturdy the HYCHIKA 17-piece Bi-Metal Hole Saw Kit feels in your hand. The blades are noticeably thick and solid, giving you that reassuring sense of durability as you start cutting.
The teeth on these saws are finely optimized, and I noticed they cut through soft metal, PVC, and wood with remarkable ease. The 2mm thickness of the blade combined with the high-hardness alloy steel makes quick work of even thicker materials without wobbling or binding.
The chip removal groove on the side is a game-changer. It clears debris efficiently, so I didn’t have to stop and clear out sawdust as often.
This feature really speeds up the process and results in cleaner, more precise holes.
Switching between sizes is simple thanks to the included mandrels and drill bits, which fit snugly into the saws. The variety of sizes—from 19mm up to 68mm—covers most plumbing needs, whether installing pipes or conduits.
Plus, the compact storage box keeps everything organized and portable.
In real-world use, I found these saws to be both reliable and versatile. They cut smoothly through different materials, and the high-quality construction means they’ll last longer than cheaper alternatives.
The only downside? If you’re working on very hard metals or thick hardwood, you might need a more specialized blade.
Overall, this kit offers excellent value with a wide range of sizes and solid build quality, making it a smart choice for DIY plumbing or general home repairs.
Amazon Basics 9-Piece Bi-Metal Hole Saw Kit 25/32″–2-11/16
- ✓ Durable bi-metal construction
- ✓ Wide size range included
- ✓ Easy to organize and carry
- ✕ Slightly slow on thick metal
- ✕ Mandrel removal can be tight
| Material | High-speed bi-metal steel (HSS-M3) with powder-coated finish |
| Cutting Capacity | Suitable for mild steel, aluminum, plastic, and plasterboard |
| Hole Saw Sizes | 25/32″ (20mm), 1″ (25mm), 1-3/8″ (35mm), 1-9/16″ (40mm), 2″ (51mm), 2-11/16″ (68mm) |
| Arbor Compatibility | Includes 1/4″ and 7/16″ hex arbors for 14-30mm and 32-152mm hole saws |
| Included Accessories | Six hole saws, two arbors, pilot drills, hex key, durable carrying case |
| Intended Use | Optimized for plumbing, carpentry, construction, and drywall applications |
Finally got around to trying out the Amazon Basics 9-Piece Bi-Metal Hole Saw Kit after hearing it was a solid choice for plumbing projects. The moment I opened the durable case, I appreciated how organized everything was—no more digging through a jumble of bits.
The hole saws themselves feel surprisingly sturdy for the price, with a smooth powder-coated finish that promises durability. I tested them on a mix of mild steel, plastic, and even some drywall, and they cut through smoothly without much fuss.
The bi-metal construction really makes a difference—there’s flexibility but also enough hardness to handle tougher materials.
Switching between sizes is straightforward thanks to the quick-change hex arbors. I especially liked the variety, from 25/32″ up to 2-11/16″, covering a good range for typical plumbing needs.
The included pilot drills help keep the cuts precise, which is a big plus when you’re working in tight spaces.
One thing to watch out for: the small mandrel can get tight after use. A quick wrench fix helps loosen it, so that’s a minor hassle.
Also, while the price is attractive, a couple of the larger sizes were a bit slower on thicker metal, so don’t expect industrial-level speed across the board.
Overall, this kit feels like a smart, budget-friendly choice for DIY plumbing or carpentry. It’s lightweight, portable, and covers most basic needs without sacrificing quality.
If you’re tired of flimsy saws that bend or dull fast, this might be your new go-to.
What Key Features Should Be Considered When Choosing a Hole Saw for Plumbing?
When choosing the best hole saw for plumbing, several key features should be taken into account to ensure efficiency and effectiveness.
- Material: The material of the hole saw is crucial as it affects durability and cutting performance. High-speed steel (HSS) is commonly used for general applications, while bi-metal hole saws combine HSS with a tougher steel base for enhanced longevity, making them ideal for cutting through various plumbing materials.
- Size Range: Selecting a hole saw with an appropriate size range is essential for accommodating different pipe diameters and fittings. Ideally, a set that includes multiple sizes allows for versatility in various plumbing tasks, ensuring you have the right size for any job.
- Teeth Design: The design and number of teeth on the hole saw impact the cutting speed and finish. Finer teeth provide smoother cuts but may require more effort, while coarser teeth can cut faster but may leave rough edges, so finding a balance that meets your needs is important.
- Depth of Cut: The depth of the hole saw determines how thick of a material it can cut through in a single pass. For plumbing applications, ensure the hole saw has sufficient depth to penetrate through walls or floors where pipes are typically installed.
- Arbor Compatibility: The arbor is the component that connects the hole saw to the drill. Ensuring compatibility with your drill and confirming the arbor size can prevent issues during operation and make the process more efficient.
- Ease of Use: Features such as quick-change mechanisms or pilot drills can enhance usability, allowing for faster setup and transition between different hole sizes. Ergonomic designs can also make handling and maneuvering easier, particularly in tight spaces.
- Brand Reputation: Considering brands known for producing high-quality hole saws can guide you towards reliable options. Researching user reviews and professional recommendations can provide insights into the performance and durability of specific models.
How Does the Material of a Hole Saw Affect Its Performance in Plumbing Applications?
The material of a hole saw significantly impacts its performance, durability, and suitability for various plumbing tasks.
- Cobalt Steel: Cobalt steel hole saws are known for their excellent heat resistance and durability, making them ideal for cutting through tougher materials like stainless steel and other hard metals commonly found in plumbing applications.
- Bi-Metal: Bi-metal hole saws combine high-speed steel with a softer alloy, resulting in a flexible and robust tool that can cut through a range of materials including wood and metal, making them versatile for plumbing projects.
- Carbide-Tipped: Carbide-tipped hole saws offer exceptional longevity and cutting efficiency, particularly for hard materials such as tile and porcelain, which can be encountered in plumbing installations and repairs.
- High-Speed Steel (HSS): High-speed steel hole saws are effective for softer materials like wood and plastic, providing a cost-effective solution for basic plumbing tasks, though they may wear out quicker on tougher materials.
- Diamond-Coated: Diamond-coated hole saws are specifically designed for cutting through extremely hard materials, such as ceramic and glass, which can be beneficial in plumbing applications that require precision and clean cuts.
Why is the Diameter Size Important When Selecting a Hole Saw for Plumbing?
When selecting a hole saw for plumbing, the diameter size is crucial for several reasons. First, the diameter determines the size of the hole you can create, which directly impacts your ability to install plumbing fixtures, pipes, and other components. Accurate sizing ensures that fittings, such as flanges or couplings, can be securely connected without gaps or leaks.
Key considerations regarding diameter size include:
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Material Type: Different plumbing materials, such as PVC, metal, or wood, may require various hole sizes for optimal fitting. For instance, a 2-inch hole saw is typically used for drains, while electrical conduits might need a larger diameter.
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Fit and Functionality: Choosing an inappropriate diameter can lead to misalignment or improper installation. For example, using a 1-inch hole saw for a 1.5-inch pipe will create significant challenges.
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Versatility: Selecting the right size allows for flexibility in different plumbing tasks. A set containing various sizes enables the user to tackle multiple projects without needing to purchase separate tools.
Ultimately, selecting the appropriate diameter ensures efficiency and accuracy in plumbing installations, minimizing potential issues during and after the project.
Which Types of Hole Saws Are Best for Different Plumbing Tasks?
The best hole saws for plumbing tasks vary based on the material and specific plumbing applications.
- Bimetal Hole Saws: Ideal for cutting through a variety of materials including wood, plastic, and metal.
- Cobalt Hole Saws: Designed for tougher jobs, particularly when cutting through stainless steel and other hard metals.
- Carbide Tipped Hole Saws: Perfect for cutting through hard materials such as ceramic tiles and concrete.
- Wood Hole Saws: Specifically made for wood, these saws usually feature a more aggressive tooth design for faster cutting.
- Diamond Hole Saws: Best suited for specialized tasks involving glass and tile, providing a clean cut without chipping.
Bimetal Hole Saws: These hole saws combine high-speed steel and a softer steel body, making them versatile and durable for multiple materials found in plumbing. They are great for general plumbing tasks, such as cutting through drywall, wood, and soft metals, ensuring a clean and efficient cut.
Cobalt Hole Saws: With a higher concentration of cobalt, these saws are built for heavy-duty applications and excel at cutting through hard metals like stainless steel. Their toughness helps maintain sharpness longer than standard bimetal saws, making them ideal for plumbing jobs that involve metal pipes or fixtures.
Carbide Tipped Hole Saws: These saws feature carbide tips that withstand high temperatures and resist wear, making them effective for cutting through harder materials like ceramic and concrete. They are particularly useful in plumbing renovations where tile or masonry needs to be penetrated without damaging the surrounding area.
Wood Hole Saws: Specifically designed for wood, these hole saws have a tooth design that optimizes cutting speed and reduces binding. They are perfect for creating holes in wooden framing for plumbing lines and fittings, ensuring clean cuts that require less finishing work.
Diamond Hole Saws: These hole saws are coated with diamond grit, making them extremely effective for cutting through tough materials like glass and porcelain tiles. Their precision cutting capability is critical in plumbing tasks that involve delicate materials, allowing for a clean finish without chips or cracks.
What Makes Bi-Metal Hole Saws Ideal for Plumbing?
Bi-metal hole saws are considered the best hole saw for plumbing due to their durability, cutting efficiency, and versatility.
- Durability: Bi-metal hole saws are made from high-speed steel teeth welded to a steel body, which gives them exceptional strength and longevity. This construction allows them to withstand the rigors of drilling through tough materials such as metal and wood, making them ideal for plumbing applications where reliability is essential.
- Cutting Efficiency: The teeth of bi-metal hole saws are designed to provide fast and efficient cutting, which is crucial in plumbing tasks that require precision and speed. Their unique tooth geometry enables them to cut through various materials smoothly, reducing the likelihood of snagging or binding during operation.
- Versatility: Bi-metal hole saws can be used on a wide range of materials, including wood, plastic, and thin metals, making them a versatile choice for plumbing professionals. This adaptability means that one hole saw can serve multiple purposes, from creating access points for pipes to installing fixtures, ultimately saving time and money.
- Heat Resistance: The high-speed steel construction of bi-metal hole saws provides excellent heat resistance, allowing them to maintain their cutting performance even under high temperatures generated during drilling. This feature helps to prolong the life of the tool and ensures consistent results across multiple uses.
- Ease of Use: Bi-metal hole saws are designed to fit easily onto standard drill chucks, making them user-friendly for both professionals and DIY enthusiasts. Their straightforward installation process and compatibility with various drill types enhance their appeal in plumbing tasks, allowing for quick and efficient project completion.
How Do Tooth Design and Pitch Influence the Efficiency of Plumbing Hole Saws?
The design of the teeth and the pitch of a hole saw significantly impact its efficiency in plumbing applications.
- Tooth Design: The shape and arrangement of the teeth on a hole saw determine how effectively it can cut through various materials.
- Tooth Pitch: The distance between the teeth affects the hole saw’s cutting speed and the quality of the cut.
- Material of Teeth: The composition of the teeth influences durability and performance in different plumbing tasks.
- Number of Teeth: The count of teeth can affect the hole saw’s ability to remove debris and maintain cutting efficiency.
Tooth Design: A hole saw with a sharp, aggressive tooth design will penetrate materials more easily, making it ideal for cutting through tough surfaces like PVC or metal pipes. Variations in tooth geometry can also enhance clean cuts, reducing the need for additional finishing work.
Tooth Pitch: A finer tooth pitch allows for smoother cuts and greater control when drilling, particularly in delicate plumbing situations. Conversely, a coarser pitch can expedite the drilling process but may lead to rougher edges, which is less desirable for precision work.
Material of Teeth: Hole saws with carbide-tipped or bi-metal teeth are often preferred for plumbing because they offer a longer lifespan and can withstand the heat generated during cutting. This durability is essential for maintaining efficiency, especially when working on multiple holes in a single project.
Number of Teeth: A higher number of teeth can provide a smoother finish, as each tooth removes less material per turn, which is beneficial for precision cutting. However, this can slow down the drilling speed, making it important to balance the number of teeth based on the specific plumbing task at hand.
What Are Some Common Mistakes to Avoid When Using a Hole Saw in Plumbing?
When using a hole saw in plumbing, avoiding common mistakes is crucial for achieving precise and clean results.
- Using the Wrong Size Hole Saw: Selecting a hole saw that is too large or too small for the intended application can lead to improper fittings or wasted materials. It’s essential to measure the pipe diameter accurately and choose a hole saw that matches it closely to ensure a snug fit.
- Not Securing the Workpiece: Failing to secure the material being drilled can result in movement during the cutting process, leading to uneven holes and potential damage. Always clamp or hold the workpiece firmly to maintain stability and control while using the hole saw.
- Neglecting to Use Lubrication: Many users overlook the importance of lubrication when using a hole saw, which can lead to overheating and dulling of the teeth. Applying a lubricant can help reduce friction, prolong the life of the hole saw, and ensure smoother cutting.
- Drilling at the Wrong Speed: Using the incorrect drill speed can cause the hole saw to overheat or bind, resulting in a poor cut or damage to the tool. It’s vital to adjust the drill speed according to the material being cut, typically slower speeds for harder materials and faster speeds for softer ones.
- Ignoring Safety Precautions: Many users forget to wear appropriate safety gear, which can lead to injuries from flying debris or accidental slips. Always wear safety goggles, gloves, and ear protection to safeguard against potential hazards while using a hole saw.
How Can Proper Maintenance Extend the Life of Your Plumbing Hole Saw?
Proper maintenance can significantly extend the life of your plumbing hole saw by ensuring optimal performance and reducing wear and tear.
- Regular Cleaning: Keeping your hole saw clean after each use prevents debris and material buildup that can hinder its cutting ability. This can be achieved using a brush or cloth to remove any residual material stuck in the teeth or body of the saw.
- Lubrication: Applying a lubricant to the teeth of the hole saw can reduce friction during cutting, which not only protects the blades but also enhances cutting efficiency. A few drops of cutting oil can make a substantial difference in the performance and longevity of the saw.
- Proper Storage: Storing the hole saw in a dry and safe place can prevent rust and damage. Using a dedicated case or organizer can keep the saw protected from physical impacts and environmental factors that could lead to deterioration.
- Inspecting for Damage: Regularly checking the hole saw for any signs of wear, such as chipped teeth or bending, allows for timely repairs or replacements. Identifying and addressing issues early can prevent further damage and ensure continued effectiveness.
- Using the Right Speed and Pressure: Operating the hole saw at the recommended speed and applying appropriate pressure can prevent overheating and excessive wear. Understanding the material you are cutting and adjusting your technique accordingly can prolong the life of the saw.
Which Brands Are Considered the Best for Plumbing Hole Saws?
The best brands for plumbing hole saws include:
- Milwaukee: Known for its high-quality tools, Milwaukee offers a range of hole saws that are durable and efficient. Their products typically feature bi-metal construction for extended life and are designed to cut through various materials, including wood and metal, making them ideal for plumbing applications.
- Lenox: Lenox hole saws are recognized for their exceptional cutting performance and longevity. They utilize a patented tooth design and high-speed steel that allows for faster cutting speeds and reduced friction, which is particularly beneficial in plumbing tasks where precision is crucial.
- DeWalt: DeWalt is a trusted name in the tool industry and their hole saws are no exception. They are designed with a unique tooth geometry that enhances cutting efficiency and minimizes breakage, making them suitable for heavy-duty plumbing jobs.
- Bosch: Bosch hole saws are known for their innovative design and reliability. Their carbide-tipped options provide superior cutting performance and are especially effective in tougher materials, ensuring that plumbers can complete their tasks with ease and accuracy.
- Irwin: Irwin offers a variety of hole saws that are designed to meet the needs of both professionals and DIYers. Their products often feature a quick-change system for easy bit changes, and their high-speed steel construction helps maintain sharpness and durability during extensive use.