Best 34 Diamond Hole Saws: Drilling Through Hard Materials

Drilling through metal and hardened materials requires specialized tools, and diamond hole saws excel in these demanding applications. Our roundup evaluates the most effective diamond hole saws available, comparing their cutting capabilities, durability, and practical features to help you choose the right tool for your projects.

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Reviews

1-1/4" Diamond Hole Saw

This diamond-coated hole saw cuts through tough materials like concrete and tile with remarkable ease, maintaining its sharpness hole after hole. The included round-hole pattern makes plug removal simple, and while it works best with water lubrication, it's still incredibly efficient. Whether you're drilling into countertops, sinks, or thick tile, this durable tool will make quick work of your projects.

1-1/4" Diamond Hole Saw for Glass and Tile

This 32mm diamond hole saw cuts through glass, ceramic, and stone with ease, thanks to its durable diamond-tipped drill bit and water-cooled design. At just 70mm long, it's a practical choice for DIY projects that require clean, precise holes in tough materials like granite and marble. The included drill bit removes the circle completely, making it a space-efficient solution that doesn't need additional guiding tools.

Lenox 12158DGDS4A Diamond Hole Saw Kit

Made in the UK, these four diamond-tipped hole saws make short work of tile and stone thanks to their brazed edge design that lasts longer than standard options. The oversized slot in each saw makes plug removal quick and easy, while the arbor-free design keeps setup simple. With their VARI-TOOTH cutting system, these multipurpose saws stay sharp longer and require minimal pressure for smooth, efficient drilling.

QEP 1/4" Diamond Hole Saw

With its 12x longer lasting diamond edge and impressive 1/4-inch precision, the Pro Wet/Dry Hole Saw cuts through ceramic and glass tiles effortlessly while ensuring your workspace stays surprisingly clean. Professional installers especially appreciate its flexibility between wet and dry operations, though some users report better results with consistent water cooling during use. The bit delivers reliable performance for multiple holes, though its aggressive cutting action requires careful control to keep it centered and on-target.

16pc Diamond Hole Saw Kit

The 16-piece diamond hole saw kit gives you the perfect combination of durability and versatility for all your tile and glass projects. Made from high-strength carbon steel with premium diamond coating, these drill bits cut through ceramic, glass, and stone like a dream while keeping your drill cool and your workspace clean. With sizes ranging from 6mm to an impressive 50mm, you'll have the right bit for every hole you need to drill - from small bottle openings to large tile cuts.

4.5" Diamond Hole Saw - Porcelain & Granite

This 4 1/2" diamond hole saw cuts through tough materials like porcelain and granite with ease, thanks to its professional-grade diamond grit and clever design that keeps the tool stable during use. Simply run water down the hole every 15 seconds to prevent cracking – no more messy finger-holding while drilling. Whether you're installing a shower diverter valve or setting a new toilet flange, this versatile tool will do the job perfectly.

Luomorgo 60mm Diamond Hole Saw

These diamond-coated hole saws tackle tough materials like glass, porcelain, and granite with 60mm cutting diameters and 28mm depths. The high-quality iron alloy construction, strengthened by a durable nickel plating, ensures lasting performance through thousands of drilling cycles. The secret to successful cuts lies in the proper technique: start with a light 45-degree angle, gradually increasing to 90 degrees while maintaining a steady water flow to keep the bit cool and the edges sharp.

Diamond Max Hole Saw Set

These diamond-coated hole saws from Milwaukee dramatically extend cutting life when working with tough materials like tile, stone, and glass. The improved brazed edge design delivers clean cuts with superior joint strength while the higher diamond concentration provides exceptional heat and fracture resistance. At just $2.33 per hole, these premium tools represent the best value available for multi-material cutting tasks.

Jingling 13mm Diamond Hole Saw

Designed for precision in challenging materials, these diamond-tipped drill bits make clean holes in stone, granite, marble, and glass with remarkable accuracy. The 13mm diameter cuts through tough materials where ordinary bits would struggle, and the 29mm depth lets you drill precisely where you need. The key is to use plenty of water as a coolant and drill slowly - once you master the technique, these bits will create perfect holes every time.

Marshalltown 1-3/8 inch Non-Arbored Diamond Hole Saw

The Marshalltown diamond hole saw makes quick work of cutting 1-3/8-inch holes through tile and stone, thanks to its sharp diamond-tipped blade and built-in water cup that keeps it cool during operation. Six included mounting gaskets help it stay firmly in place while drilling, and it performs admirably on materials like ceramic, marble, porcelain, and granite. Its proven reliability in professional settings has earned it high praise from users who rely on it for everything from faucet installations to countertop modifications.

2pcs/pack BRSCHNITT Diamond Core Drill Bit

These 1-inch diamond core drill bits handle porcelain tile and ceramic with precision, featuring a built-in wax lubricant system that cools the cutting surface and helps maintain the bit's longevity. The triangle shank design works with most electric drills, while the 10mm diamond-tipped section cuts through tough materials with minimal pressure. From DIY enthusiasts to professional contractors, this reliable Chinese-made drill bit stands up to heavy use in both home and commercial settings.

WORKEASE Diamond Hole Saw Kit

The WORKEASE Diamond Hole Saw Kit makes it easy to drill precise holes in tile, glass, marble, and other tough materials. The brazed diamond bits stay sharp ten times longer than regular bits, while the special coating handles the heat from high-speed drilling. The double suction cup guide keeps the drill steady on smooth surfaces, and the ten different bit sizes let you drill holes from 4mm to 50mm in diameter.

Professional Diamond Hole Saw

This diamond-tipped hole saw makes quick work of tough materials like tile, stone, and cement board, cutting clean holes with minimal effort. The one-piece design maintains tight tolerance for consistent results, while the premium diamond edge lasts longer than standard_bits. Users praise its efficiency, reporting multiple hole cuts before needing replacement.

Ridgid HD-VBHS1 Diamond Hole Saw

If you've ever wrestled with boring through tough materials like porcelain or granite, you'll appreciate the Diamond Hole Saw from RIDGID - it cuts through these challenges as smoothly as butter, thanks to its V-TECH diamond technology. With its simple 45-degree starting angle and no need for pricey guides, this versatile saw handles both wet and dry drilling on everything from tile to glass. Whether you're installing plumbing lines or mounting heavy fixtures, your next big drilling job just got a whole lot easier.

Starrett KD0414-N Diamond Grit Holesaw

The Starrett KD0414-N diamond hole saw cuts through hardened steel, ceramics, and concrete with clean, precise cuts that last longer than conventional tools. You'll need to use coolant for metal and ceramic work, but once the blade reaches optimal speed, you can expect smooth cutting without excessive heat buildup. The uniform diamond coating on this 4.1/4" tool delivers exceptional performance on both metallic and non-metallic materials.

10pcs 3mm-18mm Diamond Tool Drill Bit Set

When you're working with tough materials like glass, ceramic, marble, or granite, these diamond-coated drill bits are your best friend. Coming in ten handy sizes from 3mm to 18mm, they make perfectly clean holes every time - as long as you remember to keep them nice and wet with water.

Lenox 1" Diamond Hole Saw

Drill through tile and stone with remarkable ease using this durable diamond-coated hole saw, which maintains its precision cut after dozens of uses thanks to its continuous brazed edge design. The oversized slot ensures smooth plug removal, while the split-point pilot bit minimizes effort and keeps the drill straight. Whether you're installing plumbing, cutting through porcelain, or drilling into marble, this versatile tool takes the stress out of tough cutting jobs.

5-Piece Neiko Diamond Hole Saw Drill Bit Set

Drill through glass and ceramics with ease using these diamond-coated hole saws from Neiko. The five-piece set features precision-cutters that maintain their sharpness longer than traditional hole saws, thanks to their durable diamond coating and nickel-plated construction. Build accurate holes in your projects while the convenience of built-in slug-removal holes keeps your drilling process smooth and efficient.

Uxcell 6mm Diamond Drill Bit Set

These 6mm diamond-coated glass hole saws are precision tools for cutting clean holes in tough materials like glass, tile, and granite. Made from durable metal with a compact 50mm length and 5.5mm shank, they're a practical replacement for worn-out bits. Weighing just 44g, they're surprisingly light while drilling, though an electric drill is recommended for optimal performance.

Spyder 600861 Diamond Hole Saw

Crafted from premium boron-coated industrial diamond with a high-temperature nickel braze, this durable 2-1/2" hole saw cuts through ceramic, granite, and glass with remarkable efficiency - up to 20 times more holes than standard diamond saws. The large staggered removal slots make core extraction a breeze, while the heavy-duty single-piece construction ensures consistent, round holes every time. Whether you're drilling in dry or wet conditions, these USA-made saws deliver professional results with minimal diamond wear.

Diablo DHS2500DG 2.5" Diamond Grit Hole Saw

These durable diamond hole saws from Diablo excel at cutting through tough materials like tile, stone, and glass with their long-lasting diamond-tipped edges. The built-in wax lubricant helps keep things cool during use, while the snap-lock mounting system makes changing out the saw cups a breeze. With a 2-1/2 inch diameter and 2-inch cutting depth, these professional-grade tools handle masonry tasks with ease.

DGM08C Diamond Hole Saw

Made in the UK, these diamond grit hole saws outperform conventional carbide versions, thanks to their continuous grit teeth and built-in arbor design. The self-guiding blades slice through masonry and tile with remarkable precision, maintaining smooth, clean cuts while the efficient water cooling system keeps temperatures manageable during extended use.

DST 3-Piece Diamond Hole Saw Set

These durable diamond-coated drill bits make quick work of glass and tile, coming in handy for projects like turning vintage vases into lamps or installing new fixtures. With a 1/8" shank that fits standard drills, these bits are a practical choice for any DIY enthusiast, though users recommend using water to keep them cool during use.

Diablo DHS1375DG 1-3/8" Diamond Grit Hole Saw

This diamond-grit hole saw from Diablo combines durable performance with user-friendly design elements like its open-slot carbide-tipped pilot bit and SnapLock PLUS mandrel system for quick changes. The continuous diamond rim ensures clean cuts in tough materials like porcelain tile and granite, while the integrated lubricant minimizes friction and heat during use. Its 1-3/8 inch diameter and 2-inch depth make it ideal for both professional and DIY applications where precision and longevity are essential.

5-Piece Diamond Max Hole Saw Set

This versatile hole saw set from Milwaukee packs impressive durability into its compact design, with each of the three included sizes (3/16", 1/4", and 5/16") delivering precise cuts through even the hardest materials like tile, stone, and glass. The included diamond-coated bits are engineered for longevity, reportedly lasting up to ten times longer than conventional alternatives thanks to their superior heat resistance and shard-resistant construction. The intuitive 45-degree starting technique and moisture-moderated operation make these versatile tools surprisingly simple to use, though users recommend practicing to master the precise control needed for clean, accurate holes.

1 Inch Brazed Diamond Hole Saw

The JIECHENG diamond hole saw makes short work of hard materials like ceramic and granite with its precision-designed center drill bit. Its durable construction and excellent rust protection deliver professional results at a practical price. Built in China, this reliable tool handles everything from glass to marble with ease.

Lenox 1211932DGHS Diamond Hole Saw

This diamond-grit hole saw cuts through tile and stone with remarkable efficiency, thanks to its brazed-diamond edge that maintains its sharpness for extensive use. The hole saw's robust design allows it to handle tough applications while its round hole design speeds up the plug-removal process. Users particularly appreciate its superior cutting performance compared to traditional carbide alternatives.

Bosch HDG418 Diamond Hole Saw

This versatile diamond hole saw cuts through the toughest materials with remarkable speed and precision, from porcelain tile to granite. The vacuum-brazed diamond grit construction ensures lasting performance while the segmented teeth minimize heat and debris. Whether you're drilling through solid stone or ceramic tile, this durable tool handles the job efficiently with its one-inch maximum cutting depth.

Diamond Drill Bit Set

Made from industrial-grade steel with a corrosion-resistant nickel coating, these diamond-tipped drill bits are built to last through tough ceramic and glass jobs. The thick diamond coating and large clearance hole design ensure smooth operation while the 10 included bits cover drill sizes from 6mm to 30mm. A must-have for anyone working with tough materials like porcelain, tile, and stone.

Lenox 5/16" Diamond Hole Saw

Drilling through tough materials like porcelain tile and granite can be a real challenge, but this durable diamond hole saw tackles the job with ease. With its brazed diamond edge and low-torque design, it cuts through hard materials quickly while requiring minimal pressure. The oversized slot makes plug removal a breeze, saving you time and effort on each project.

Milwaukee 5/8" Diamond Hole Saw

The Milwaukee Diamond MAX Hole Saw cuts through tile, stone, and glass with remarkable efficiency, thanks to its premium diamond coating and advanced braze technology that extends the bit's lifespan tenfold. Users consistently praise its powerful performance and ease of use, though proper technique, like using a guide for precise drilling, can help achieve the best results, especially when working with thick materials.

3 Otters 15pcs Diamond Drill Bit Set

This 15-piece diamond drill bit set handles glass, marble, and granite with ease, starting holes diagonally before making a smooth transition to circular cutting. Each bit requires water for lubrication to prevent overheating and ensure longevity. The glass-specific design features side slots for debris removal and includes a mini screwdriver for bit maintenance.

QEP 1-3/8" Diamond Hole Saw Kit

A diamond-tipped hole saw that makes quick work of ceramic, glass, and stone, this handy tool keeps your drilling cool with a built-in water system. It's a lifesaver for DIY projects that require precise holes in tough materials like granite and porcelain tile. While some users report mixed durability, most find it performs great for their needs with proper water cooling.

DeWalt DW5207 Masonry Drill Bit Set

This seven-piece drill bit set from DEWALT combines precision with durability for tackling masonry and concrete projects. The carbide-tipped bits, ranging from 3/16" to 1/2" in diameter, provide consistent performance for both electric and cordless hammer drills. Users consistently praise their ability to drill deep holes without premature wear, making them a practical choice for anyone working with tough materials.

Buyer's Guide

Hole saws featuring diamonds on their cutting edges are designed for cutting precise, clean holes through tough materials like concrete, brick, and stone. These specialized tools combine diamond abrasives with durable steel bodies to create professional-quality results efficiently.

Diamond Coating Technology

The quality of diamond coating directly impacts tool performance and longevity. Premium diamond hole saws use high-concentration diamond tips that are more evenly distributed and firmly bonded to the steel body. This results in sharper cuts, reduced heat buildup, and longer tool life compared to cheaper alternatives with lower diamond concentrations or loose coatings.

Shaft Design and Handle Options

The hole saw's shaft design affects both cutting efficiency and user comfort. Opt for a shaft with an industrial-grade hardened steel construction for maximum rigidity and resistance to flexing under load. Handle options include standard grips, T-grips for better control during side-cutting, and extended handles for reaching high overhead locations safely.

Material Compatibility and Finishing

When selecting a diamond hole saw, consider the specific materials you'll be cutting and the intended use. Tools designed for concrete and masonry have different cutting geometries and abrasives compared to those for softer materials like block or granite. Some premium saws feature multi-material coatings that optimize performance across multiple substrate types.

Size Range and Compatibility

The hole saw's size range determines its versatility for different projects. Most professional models offer diameters between 4" and 12", though specialized tools may extend beyond these limits. Ensure the tool is compatible with your drill press or power drill's maximum torque specifications to prevent motor burnout during operation.

FAQ

What is a diamond hole saw?

A diamond hole saw is a specialized tool designed to cut precise, straight holes through hard materials like concrete, brick, stone, and tile. The cutting bit features diamond-embedded tips that maintain cutting accuracy and durability under high pressure.

These saws typically use a water cooling system to extend tool life and prevent burning or chipping of the material being cut. The result is clean, professional-quality holes with minimal dust and debris.

What are the main benefits of a diamond hole saw?

Using a diamond hole saw increases cutting efficiency by up to 80% compared to traditional carbide-tipped saws when working with hard materials. The diamond tips resist wear and maintain their cutting angle over time, producing consistently sized holes without frequent repositioning.

The water-cooled design significantly reduces heat buildup and prevents material damage, allowing for continuous cutting without delays for tool or material cooling. This results in faster projects and better overall performance.

What types of diamond hole saws are available?

The most common types include straight-shank, side-shank, and plunge-style saws. Straight-shank models are suitable for most power drills, while side-shank variants are specifically designed for certain manufacturers' drill models. Plunge-style saws have a retractable cutting mechanism and are ideal for creating holes in thick materials like concrete slabs.

Cuts range from 1/2 inch to over 10 inches in diameter, with specialty options available for specific applications like chimney openings or large ventilation holes. Diamond content typically ranges from 15% to 32%, with higher percentages suitable for thicker materials.

How do I choose the right diamond hole saw for my project?

Measure the minimum hole diameter required (add 1-2 inches to accommodate the saw's arbor and tip diameter) and select a bit that matches your drill's shank type. Consider the material thickness you're cutting - thin materials can handle 15-20% diamond content, while thick materials need 32% or more.

Factor in your drill's maximum torque and power output, as insufficient force can cause stalling and poor cuts. Check the water requirement and ensure your drill can deliver the necessary flow rate (typically 1-2 gallons per minute).

What should I consider when using a diamond hole saw?

Always wear appropriate safety gear including protective eyewear, dust mask, and hearing protection. Use the correct drill speed for your material - typically between 800 and 1200 RPM for concrete and 200-400 RPM for stone. The bit should be straight and perpendicular to the surface at all times during operation.

Air-cooled saws are not recommended for wet concrete curing structures or close proximity to electrical equipment. For best results, use new or properly maintained bits, and replace them when signs of dulling appear. Keep the cut surface perpendicular to the direction of rotation for optimal results.

How do I maintain and store my diamond hole saw?

After each use, thoroughly clean the saw and cutting bit in warm water with mild soap. Dry completely before re-storing. Store in a dry location with the bit tip resting on a soft surface like a rubber mat to prevent damage. Regularly check for wear indicators and replace bits when diamond exposure exceeds 10-20% of the visible surface area.

When not in use in a damp environment, store in a dry air environment and consider applying a light coat of oil to the cutting edges to prevent rust. Keep the water nozzle free from mineral buildup by periodically flushing with clean water and performing regular cleaning and maintenance on the water delivery system.