Granite is a durable luxury material, so it is no surprise why many people love to incorporate it into their homes and other high-end projects. You may find yourself wanting to drill into the material in order to customize your home, so we’re here to help prevent ruining your granite.
Despite its overall hardness, granite is quite a brittle material. This means you must use the best drill bit. The last thing you want is to ruin your equipment or create cracks on your granite.
We have put together this guide to help you ensure that does not happen.
High-Quality Granite Drill Bit: Comparison Table
Not in a position to read the entire review? No worries. We have put together the following comparison table that gives you a quick overview of our top choices.
This should help you make a fast and informed decision.
Buying Guide – How to Choose
As you begin the journey of finding the perfect drill bit for granite, it is important to consider several factors that will influence your purchasing decision.
Some of these factors include:
Bit Size
- Drill bits come inches or millimeters and they often range between 1-50 millimeters in diameter
- Of course, you will require different sizes for different projects, therefore it makes sense to get a set of different bit sizes
- For tinier and precise holes, you will require smaller bits; for rounded edges, larger bits will do the job
Bit Material
We have already mentioned that granite is a brittle material and can therefore crack or shatter if not handled properly during drilling.
As such, the best bits for precision drilling with granite are made of either:
- carbide
- diamond
- diamond coating
Bit Shape
- Generally, drill bits will come with circular or arrowhead tips
- Arrowhead tips work best for drilling smaller holes
- Circular ones drill holes and circles required for wiring or pipework
In the end, you want to pick drill bits based on the hole size you want so again, getting the bits in a set would be a wise decision.
Review of the 11 Best-Rated Drill Bits that Work on Granite
The market is saturated with different drill bits, so shopping can be an intimidating task.
However, we have reviewed some of the best-selling drill bits for granite to help you make the right choice.
1. Drilax 10 Pieces Set Diamond Drill Bit
To start us off, we have this unit from Drilax that comprises a premium quality diamond build. You can certainly rely on this product’s longevity.
- Material: Steel with Nickel Coating
- Cuts through:Quartz, Granite, Ceramics, Porcelain, Glass, Tiles, Marble, and Many Types of Stones.
- Size Bits: 5/32″, 3/16″, 1/4″, 5/16″, 3/8″, 1/2″, 5/8″, 3/4″, 7/8″, 1 inch
- Shank: maximum shank 3/8″
- Number of bits: 10 bits
What We Liked About It
- Can drill through thick material effortlessly
- Offers the easiest and fastest way to bore holes through granite
- Its ease of use is perfect for professionals and hobbyists alike
- Great for so much more than just granite
What Could Have Been Better
Some users have complained that this product’s user instructions are quite vague making it difficult to use it. We feel that the manufacturer should have made the instructions clearer to avoid this issue.
- Reasonably priced set
- Can cut through a variety of materials
- Durable, long-lasting set
- Unclear instructions
Buyers are pleased with the performance of this popular drill set. Reviewers shared their success stories using these for materials such as glass, porcelain, and of course granite. Most buyers mentioned use for more DIY type work. “Nice kit for small jobs… Used to put a hole in my Granite Sink.”
2. Bosch HCBG700 7-Piece Drill Masonry Bit Set
No doubt, you want to make clean holes in your granite. This drill bit set is perfect for the job simply because it offers precision drilling.
- Material: Carbide
- Cuts through: Concrete, stone, Block and masonry
- Size Bits: 2 x 3/16″, 3/8″, 1/4″, 2 x 5/32″, 1/8″
- Shank Type: Straight
- Tool Flute Type: Spiral
- Number of bits: 7 bits
It features a carbide tip that works to prevent pressure and cracking as well as longevity.
What We Liked About It
- A carbide tip prevents pressure and cracking, as well as ensures longevity
- The 7 pieces in this set are versatile for many different projects
- Other than that, a three-flat shank design provides a better grip and ultimately prevent slippage
- You will also find it extremely easy to install the bits
- An included carrying case makes storage easier and protects from damage
What Could Have Been Better
Some users have complained that the bits do not function as expected on advertised materials such as stone and masonry. We feel that the manufacturer should have been clear on that to avoid customer mistrust.
- Highly functional set
- Long-lasting
- Purchase includes a case to keep organized
- Not as efficient on concrete
Buyers are raving over this highly rated bit set. Customers have used these quality bits for a variety of tough materials, from cinder blocks to stucco to granite. These are professional quality bits at a DIYer price point, a great addition to your tool set.
3. BGTEC Drill Bit Set
If you are looking for a drill bit set that can be used on various materials including plastic, glass, concrete, or even granite, this has to be it.
- Material: Artificial diamond and Steel body
- Cuts through: Granite & marble, masonry, concrete, tile/ceramic, glass, hard plastic,All-Purpose Drilling
- Size Bits: 1/4″ 6mm
- Shank Type: Straight
- Number of bits: 10 bits
What We Liked About It
- Wax insides provide lubrication and cooling, so the product will never overheat
- Vacuum Brazed diamond technology provides great efficiency, faster cutting, and durability
- The bits are so easy to use especially on granite making them among the favorite drill bits for granite and ideal for beginners
- It is among the most affordable options on this list even with all its features
What Could Have Been Better
According to several users, this product’s tips wore down after several uses. We feel that the manufacturer should have used a little bit more coating for the tips to avoid this.
- Versatile bit set
- User friendly
- Value for money
- Not as durable
We continue our list with another highly-rated customer favorite. “Best bit for hard stone hands down.” Users shared that these work precisely and with ease in a variety of tough, yet delicate materials.
4. Shdiatool 6pcs Drill Bits Set
It’s no secret that drill bits tend to overheat during drilling because of the friction created but that does not have to be your reality with this set.
- Material: Artificial diamond and Steel body
- Cuts through: Porcelain tile, granite, marble, stone, Masonry, brick.
- Size Bits: 06, 08, 10, 25, 35, 51mm
- Shank: Straight
- Number of bits: 6 bits
What We Liked About It
- Dense wax inside the drill bit cools it during drilling
- Vacuum Brazed technology makes it ideal for drilling in dry and wet conditions
- High-quality diamond grain and high strength steel construction are great for durability
- Provides rapid and smooth drilling as well as longer life
What Could Have Been Better
Unfortunately, the diamond coating on these bits appears not to cover the entire tip. We feel that the manufacturer should have concentrated on giving the bits whole coverage to avoid the same.
- Highly durable design
- Great precision
- Easy to remove
- Productive with both wet and dry drilling
- Some reported excessive shaking
This highly-rated set is another customer favorite. “One of the best things I’ve ever purchased!” These bits are durable and work effiently for both professionals and DIYers.
5. Sunjoyco 30pcs Diamond Drill Bits
You get a whopping 30 pieces when you purchase this product. Surely, there is no drilling project that you cannot attempt with that.
- Material: Steel + Diamond Sand
- Cuts through: Glass, ceramics, porcelain, ceramic tile, porcelain tile, limestone, slate, marble, granite, light stone, and fiberglass
- Size Bits: 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 25mm, 28mm, 30mm, 35mm, 40mm, 50mm, 16pcs hole saw drills + 14pcs 6mm Hole opener
- Finish Type: Nickel
- Number of bits: 30 bits
What We Liked About It
- Great for drilling through fiberglass, marble, porcelain, and granite
- Nickel-plated and industrial-grade carbon steel build offers longevity and corrosion resistance
- The diamond coating gives you superior cutting strength for all the clean holes you will want on your granite
- With these bits, you get efficient and faster outcomes every time
What Could Have Been Better
Regrettably, these bits tend to overheat.
We feel that the manufacturer could have fitted them with denser wax on the inside to prevent that.
- Great value with multiple sizes
- Superior quality set
- Wide application
- Works accurately and cleanly
- Tends to overheat with prolonge use
Buyers have utilized these bits for a variety of projects, with great success, including granite. Customers were happy with the performance of this set, with good reviews even from users with less DIY experience.
6. Shdiatool Diamond Core Drill Bits
As a brand, SHDIATOOL endeavors to produce high-quality power tools and they outdid themselves with this one. With these drill bits, you can easily cut holes through concrete, marble, or granite.
- Material: Artificial diamond and Steel body
- Cuts through: Granite, marble, engineering stone, concrete, brick
- Size Bits: 1-3/8″(35mm)
- Shank: 5/8“-11 Threaded
- Number of bits: 1 bit
What We Liked About It
- Ease of operation is extremely user-friendly and suitable for beginners
- Built to offer durability that will stand the test of time
- Versatility makes them great for more than just granite
What Could Have Been Better
Even though the product description states that this product can drill through different materials, some users have complained that it did not cut through porcelain.
We feel that the manufacturer should have used stronger material for the tips to counter that.
- Sturdy design
- Versatile
- Easy to use
- Expensive for only one bit
This heavy-duty bit works great for tough materials – “Cut my concrete wall like butter.” This performs well and gets the job done, with many reviewers using this successfully on granite.
7. Shdiatool Dry Diamond Drill Bits
You do not have to use water to stop these drill bits from overheating. Simply because it contains wax inside for cooling. We bet you will appreciate the convenience that comes with that.
- Material: Artificial diamond and Steel body
- Cuts through: Porcelian, Tile, ceramic, granite, marble, masonry, stones
- Size Bits: 6mm
- Shank: 3/8“ Quick Change Hex Shank
- Number of bits: 5 bits
What We Liked About It
- The precision that is necessary for drilling through granite
- Carbon-made tips designed to reduce breakouts and expand the lifetime
- Multipurpose bits for ceramic, porcelain, or glass as well
What Could Have Been Better
As reported by some users, these bits will not drill through harder materials even though the product description claims that they are multipurpose.
We feel that the manufacturer should have used better quality material during construction to make that possible.
- Highly efficient set
- Multipurpose use
- Wax included for cooling
- Tips could be stronger
Buyers are raving over this set, and have shared that it is efficient for a variety of projects. There is some mention that the tips dull easily, but that can be quickly fixed with sharpening.
8. Damo 1-3/8 inch Diamond Core Drill Bit
With a 5/8-11 thread, this product will fit on most high-speed grinders and we believe you will appreciate this.
- Material: Diamond
- Cuts through: Concrete, Granite, Marble Hole Saw
- Size Bits: 1-3/8″
- Number of bits: 1 bit
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What We Liked About It
- Vacuum Brazed Technology provides you with rapid and aggressive cutting on granite
- built to offer durability, so you do not have to think about your next purchase anytime soon
What Could Have Been Better
These bits tend to overheat as reported by some users.
We feel that the manufacturer should have put a mechanism in place to prevent that from happening or reduce it.
- Can be used without water
- Sturdy design that can work with tough material
- Durable build
- Tends to overheat
- Expensive option
Buyers are happy with this durable, quality set. According to reviewers, these are produced on a variety of tough materials, including granite. “I will buy more bits from this company in the future.”
9. Jashtool Diamond Drill Bits
We know you are mostly here because you are looking for high-quality drill bits for granite, and this set from Jashtool works just fine for that.
- Material: Metal
- Cuts through: Ceramic, Porcelain, Tile, Granite, Marble, Etc.
- Size Bits: 6mm+6mm+6mm
- Shank: Triangle
- Number of bits: 3 bits
What We Liked About It
- These bits feature a diamond construction to give them the strength required to cut through granite, porcelain, and ceramic
- The body features a steel and nickel build that assures you against breakages
- Wax in the bits provide the cooling and lubrication needed during drilling without having to add water
- The bits also have a groove and hole on the side for removing any debris from drilling
What Could Have Been Better
The manufacturer of this product should have made it with durability in mind seeing as some users have complained that the bits fell apart after several uses.
- Good value set
- Thick, sturdy design
- Different sizes
- Coating eaily flakes off
Buyers are pleased with this set, it’s a great buy “When you need to cut through anything.” Most reviews shared that these are better tailored to DIY projects versus professional use.
10. Neiko 00823A 5 Piece Drill Bit Set
You will get to enjoy a sharper cutting edge and optimal performance with this bit set. Why? Simply because it comes with a diamond coating.
- Material: Marble, Glass, Porcelain, Ceramics, Diamond
- Cuts through: Glass, Ceramics, Porcelain, Tile, Granite, Bottles, Pots, and Marble
- Size Bits: 1/2″, 3/8″, 5/16″, 1/4″, 5/32″
- Number of bits: 5 bits
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What We Liked About It
- Side holes facilitate slug removal after drilling
- Resistant to corrosion through nickel plating
- Five pieces make it versatile for any project
- Extremely easy to use, making it the perfect companion for DIYers and novices
What Could Have Been Better
Judging from reviews, this product does corrode and we feel that the manufacturer should have used more nickel coating during construction to avoid the same.
Buyer’s Feedback Section
- Sharp cutting edge
- Durable, built for longevity
- Great value
- Easy to use, even for beginners
- Prone to corrosion
Reviews shared that this set works well for hard materials, including granite. Many used these successfully for projects around the house. This one would be a great option for those just starting out, and aren’t ready to make a large investment.
11. Diablo by Freud DMARG1220-S5 5 pc Drill Bit Set
How would you love to save up to 30% of your income? You get to do that by purchasing this bit set. The carbide tips can withstand high heat applications as well as impact giving your bits an extended life.
- Material: Blend
- Cuts through: Granite
- Size Bits: 5/32” x 4” x 6”, 3/16” x 4” x 6”, 1/4” x 4” x 6”, 5/16” x 4” x 6”, 3/8” x 4” x 6”
- Number of bits: 5 bits
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What We Liked About It
- Includes five commonly used pieces
- Corrosion-resistant
- Perfect for a variety of materials including plastic, ceramic, and granite
What Could Have Been Better
Some users have reported that this product arrived with some bits missing and we feel that the manufacturer should have included a carrying case to reduce the likelihood of missing parts.
- Corrosion-resistant
- Versatile for a variety of projects
- Durable design for longevity
- Could use a carrying case
We wrap up our list with this highly reviewed set. Various reviewers shared that they’ve used this set for years and they still work like new. “It’s a great product and goes into brick-like butter.”
Granite Drilling Tips
You now know what options are available to you when it comes to granite drilling. How about some tips to help with your experience drilling through the material?
1Put on protective gear before you start drilling to protect yourself from injury.
- Gloves
- Dust mask
- Safety goggles
Measure and mark on your granite surface where you intend to create holes.
- Put on some masking or duct tape along the cut lines
- The tape will give your bit a bit of traction as you cut into the granite
Granite is a solid material but it is also very brittle, especially at the edges. This can cause the bottom of your holes to explode while drilling.
- As such, put a piece of scrap stone beneath the drilling point
- This will provide a cleaner cut from the top to bottom
Use water to cool down your drill bit once you begin drilling if it does not contain wax.
- Be careful if you will be spraying water and using a corded drill to avoid electrocution
Do not apply too much pressure while drilling.
- You’ll risk cracking and stressing your granite surface
- Moderate pressure works just fine
You want to try drilling through a scrap piece of granite if you have never done it before.
- Practice until you perfect the art
You see, granite is an unforgiving material and you do not want to risk making any mistakes as they will have a permanent impact on your result.
Frequently Asked Questions
You may have a question or two as far as the best granite drill bits and for that, we have addressed several commonly asked ones to help give better insight.
Can a masonry bit cut through granite?
You can attempt to do that but is not advisable. You see, a masonry drill bit is not strong enough to drill through granite. If you have to do it, it is important to put a bottle cap over the spot you want to cut through with the opening facing upwards.
What is the best drill bit for granite?
You will require specialized tools to cut through granite. The best drill bit for that has to be a diamond core drill bit. These come in a variety of heights and diameters so pick your accordingly.
What is the best way to drill a hole through granite?
- First, you want to attach a diamond-tipped bit to a power drill
- The diameter of the bit should match the diameter of your fixture or be a bit larger
- Then, you want to dip the diamond tip in cutting oil to keep the drill cool and lubricated
- After this, you can begin drilling
Our Top Pick
All the products we have reviewed are of high quality, but if we had to choose one as our top pick it would have to be the Drilax 10 Pieces Diamond Drill Bit Set.
This product is set to provide you with the durability you need for all your power tools, seeing as it comes with a superior diamond build. More on the build, these bits can effortlessly cut through thicker materials other than granite making it versatile as well.
You may also want to opt for this set if you want an easy and fast option for cutting holes through granite. What we loved most however is that this product is user-friendly hence suitable for beginners. It is also reasonably priced even with all the aforementioned features, thus giving you value for money.
Conclusion
Granite countertops and floors come with several benefits seeing as this material is quite durable and aesthetically appealing. You may also want to note that it is quite expensive and brittle so if you have to cut through it, you have to be very careful not to create cracks.
With the best drill bit for granite, you can achieve clean-cut holes and with this guide at your disposal, you should be able to make the right choice. We are waiting on you to do that.