Best Diamond Drill Bits of 2025

Jennifer Fraser Avatar
Jennifer Fraser
Last Updated: 8 Feb 2025

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If you're looking for precision drilling, diamond drill bits are an excellent choice. These bits are made with a high-quality diamond coating that allows them to drill through tough materials like glass, ceramics, and stone with ease. They are designed to provide clean, accurate cuts without chipping or cracking the material. Whether you're a DIY enthusiast or a professional tradesperson, diamond drill bits can help you achieve the results you need.

At a Glance: Our Top Picks

BRSCHNITT 5pcs Diamond Drill Bit Set Cover #TOP 1
BRSCHNITT 5pcs Diamond Drill Bit Set
ftb score rating icon 9.9
BRSCHNITT 6mm Diamond Drill Bit Set Cover #TOP 2
BRSCHNITT 6mm Diamond Drill Bit Set
ftb score rating icon 9.8
SHDIATOOL 6mm Dry Diamond Drill Bit Set Cover #TOP 3
SHDIATOOL 6mm Dry Diamond Drill Bit Set
ftb score rating icon 9.6

Top 10 Diamond Drill Bits

BRSCHNITT 5pcs Diamond Drill Bit Set

791180052209
6/6/6/6mm+6mm
BRSCHNITT 5pcs Diamond Drill Bit Set Cover
Diamond Drill Bit - BRSCHNITT 5pcs 6mm Masonry Drill Bits Set for Porcelain Tile Ceramic Stone Granite Marble,Hex Shank Diamond Hole Saw Drill Bit

The BRSCHNITT Diamond Drill Bits are designed for a variety of tough materials, including porcelain tile, ceramics, granite, and marble. You will appreciate the wide applications, as these bits allow for dry drilling with ease, making your DIY projects simpler. The carbide triangular drill bit aids in precise positioning, ensuring accuracy. With five pieces in the set, including a diamond height of 8mm, you have the right tools to tackle different tasks efficiently. The vacuum brazed technology enhances durability, prolonging the life of your drill bits.

What We Like
Versatile for various materials
Accurate positioning with carbide bit
Durable vacuum brazed technology
Suitable for different electric drills

BRSCHNITT 6mm Diamond Drill Bit Set

BDB02006201R002
Blue
BRSCHNITT 6mm Diamond Drill Bit Set Cover
Diamond Drill Bit 6mm,BRSCHNITT 2pcs M14 Vacuum Brazed Diamond Tip Drill Bit for Tile Porcelain Stoneware Ceramic Marble Granite Drilling,Suitable For Angle Grinders

The BRSCHNITT Diamond Drill Bit offers exceptional performance with its 6mm size and 10mm diamond height, making it ideal for drilling through tough materials like porcelain, ceramics, and granite. With its vacuum brazed technology, you can expect improved durability and resistance to wear, ensuring a longer lifespan for your tool. The U-groove tooth shape allows for fast and smooth drilling, giving you clean holes without broken edges. Compatible with angle grinders, this tool is perfect for both DIY enthusiasts and professionals alike.

What We Like
Effortless cutting through tough materials
Long-lasting durability
Fast and smooth drilling
Compatible with angle grinders
#TOP 3

SHDIATOOL 6mm Dry Diamond Drill Bit Set

2pcs 6mm
SHDIATOOL 6mm Dry Diamond Drill Bit Set Cover
SHDIATOOL Dry Diamond Drill Core Bit 2pk Diameter 6mm Vacuum Brazed Drilling Porcelain Tile Granite Marble

The SHDIATOOL Diamond Drill Bits are designed for dry drilling in various hard materials, including porcelain, granite, and marble. With a 6mm diameter and 10mm diamond height, these bits offer clean and efficient drilling. The self-cooling core enhances longevity, ensuring that you can work for longer periods without interruption. Additionally, the vacuum brazed technology provides superior durability and heat resistance, making these drill bits a reliable choice for your projects.

What We Like
Effective for dry drilling
Self-cooling for longer life
Durable vacuum brazed technology
Compatible with common angle grinders
#TOP 4

Draak Diamond Drill Bit for Tough Materials

Black
Draak Diamond Drill Bit for Tough Materials Cover
Draak Dry Diamond Drill Bit 5mm Wax Filled for The Toughest Materials Including Marble, Granite, Porcelain, Ceramic & Glass Tiles Vacuum Brazed Porcelain 5

The Draak Diamond Drill Bit is designed for drilling through tough materials like marble, granite, porcelain, ceramic, and glass tiles. Its grit edged tip requires no water, making it a convenient choice for various projects. With the ability to drill the hardest grade 5 porcelain, you can rely on its superior cutting performance. Additionally, the self-cooling feature ensures that the bit lasts longer, giving you more value for your investment.

What We Like
No water required
Drills toughest materials
Longer lifespan
Self-cooling technology
Superior cutting performance
#TOP 5

QUEFORET 5pcs Diamond Drill Bits Set

QUEFORET
Q2-B201402Q008
8mm*4+8mm
QUEFORET 5pcs Diamond Drill Bits Set Cover
QUEFORET Diamond Drill Bits Set 5pcs - 4pcs 8mm Dry Hole Saw, 1pc 8mm Carbide Bit for Ceramic Porcelain Tile Marble Granite, Quick Change Hex Shank

The QUEFORET Diamond Bits Set includes five pieces designed for efficient drilling in materials like ceramic, porcelain tile, marble, and granite. Its quick change hex shank allows for easy swapping of bits, saving you valuable time. The innovative wax inside the bits melts during use to manage heat, while the spiral groove promotes effective heat dissipation and chip clearance. The high-quality diamond particles ensure a cleaner cut, reducing debris and enhancing your drilling experience.

What We Like
Quick change hex shank
Effective heat dissipation
High-quality diamond particles
Suitable for various materials
Long-lasting performance

Dry Diamond Drill Bit for Porcelain and Glass

Blue
Dry Diamond Drill Bit for Porcelain and Glass Cover
Dry Diamond Drill Bit 6mm Diamond Tipped Drill Bits for Porcelain Tiles Glass with Wax Core All-Purpose Drilling

The XYZDOUBLE Diamond Drill Bit is designed for efficient drilling into hard materials like porcelain tiles, glass, and ceramics. Its high-quality diamond tips ensure a clean and fast drilling experience, making your projects easier. You can enjoy the convenience of dry drilling, as it features a cooling wax core that eliminates the need for water. This drill bit is versatile, working with various surfaces and compatible with all electric drills and angle grinders, giving you the flexibility you need for different tasks.

What We Like
Fast and clean drilling
Dry drilling without water
Versatile for many materials
Stable and durable design
Long service life
#TOP 7

SHDIATOOL Diamond Drill Bits for Various Materials

A860
SET6
SHDIATOOL Diamond Drill Bits for Various Materials Cover
SHDIATOOL Dry Diamond Drill Core Bits Triangle Shank 6/8/10/20/25/28/32/35/45/50/65MM Vacuum Brazed for Porcelain Tile Granite Marble

The SHDIATOOL Diamond Drill Bits are designed for efficient drilling in a variety of materials, including porcelain tile, granite, and marble. Each bit features a triangle shank for enhanced stability and comes in multiple sizes, ensuring you have the right tool for your project. Thanks to their high-quality diamond and steel construction, they provide fast and smooth drilling, significantly reducing chipping. With a portable suitcase included, you can easily carry and store these bits while keeping them protected between uses.

What We Like
Suitable for multiple materials
High durability and efficiency
Fast, smooth drilling experience
Portable storage included
#TOP 8

LEKOMESH 6MM Diamond Core Drill Bits Set

LEKOMESH
LKMD6-M14-35-40-60-SP
Mint green
6mm*10
LEKOMESH 6MM Diamond Core Drill Bits Set Cover
LEKOMESH Diamond Core Drill Bits - 10pcs 6MM Tile Hole Saw for Porcelain Ceramic Marble Granite Stone Quartz,M14 Thread

The LEKOMESH Diamond Core Bits are designed with a diameter of 6mm and a total length of 60mm, making them perfect for drilling through tough materials like porcelain, ceramic, and granite. The vacuum brazed technology enhances durability, ensuring they withstand challenging tasks and last longer. Additionally, the cooling wax aids in heat dissipation and chip removal, improving efficiency during use. You can use these bits for both dry and wet drilling, providing versatility for various projects.

What We Like
Durable vacuum brazed technology
Efficient heat dissipation
Versatile for wet and dry drilling
Suitable for tough materials
#TOP 9

Pronese Diamond Drill Bits Set for Hard Surfaces

717994858585
6/6/8/8/10
Pronese Diamond Drill Bits Set for Hard Surfaces Cover
Pronese Diamond Drill Bits - 5 Pcs 6/6/8/8/10mm Dry Drill Bits Sets for Granite,Marble,Porcelain,Ceramic & Tile.

The Pronese Diamond Drill Bits offer an ultra-sharp design that enhances cutting speed, making it easier for you to drill through tough materials like granite and porcelain without clogging. Their versatility allows for both dry and wet drilling, extending the life of the bits. With superior durability, the built-in wax core prevents overheating during use, ensuring efficient drilling. The quick compatibility with various drill types ensures a stable grip, giving you precise control over your drilling tasks.

What We Like
Ultra-sharp cutting edge
Versatile for dry and wet use
Prevents overheating
Compatible with most drills
#TOP 10

KURSTOL 10pcs 6mm Diamond Drill Bit Set

30738ade-046c-4dbc-a16c-b259d5d861b6
6mm*10
KURSTOL 10pcs 6mm Diamond Drill Bit Set Cover
KURSTOL Masonry Diamond Drill Bit - 10pcs 6mm Concrete Diamond Hole Saw Set for Wood Plastic Brick Ceramic Tile Etc,Diamond Core Drill Bit Carbide Tips Triangle Shank Fixed on Drills

The KURSTOL Diamond Drill Bits set includes ten carbide drill bits, designed for high performance and durability. With a precise cross head design, you can expect reduced slipping and more stable drilling, making your tasks easier. The industrial-grade tungsten carbide ensures excellent wear resistance, enhancing the longevity of the bits. Additionally, these bits are compatible with various drills, allowing for accurate drilling across multiple materials, from wood to concrete, providing you with versatility in your projects.

What We Like
Durable carbide material
Stable and precise drilling
Wide compatibility with drills
Versatile for many materials
Easy chip removal
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What are diamond drill bits used for?

Diamond drill bits are perfect for drilling holes through hard materials such as these: Glass, sea glass, beach glass, fused glass, sheet glass. Stone, gemstones, rock, pebbles, minerals. Ceramic, porcelain, tiles, glazed pottery, plates, china.

2. Which bit is suitable for diamond drilling?

EN-8 Grade Steel Diamond Drill Bits, For Mining Core bits are attached to the foremost part of the core barrels to be used in direct drilling of the ground, read more...

3. Can diamond make drill bits?

A diamond drill bit is a helpful tool when it comes to making holes in hard non-wood surfaces such as ceramic, porcelain, [url='573361']glass[/url], stone, marble and granite. Diamond drill bits get their extra cutting power from little pieces of diamond powder embedded in them.

4. How many times can you use a diamond drill bit?

For example, drilling through a ceramic, a diamond drill bit is capable of giving 400 holes averagely, but that same drill bit can give you 100 holes if you are drilling a dense stained glass. The longevity of the drill bit majorly revolves around the usage of the bit and the type of material it drills.

Editor's Notes

During our diamond drill bit research, we found 306 diamond drill bit products and shortlisted 10 quality products. We collected and analyzed 12,953 customer reviews through our big data system to write the diamond drill bits list. We found that most customers choose diamond drill bits with an average price of £15.21.

The diamond drill bits are available for purchase. We have researched hundreds of brands and picked the top brands of diamond drill bits, including BRSCHNITT, SHDIATOOL, DRAAK, QUEFORET, XYZDOUBLE. The seller of top 1 product has received honest feedback from 77 consumers with an average rating of 4.9.

Written by
Jennifer Fraser Avatar

Jennifer Fraser is a licensed contractor specializing in sales, maintenance, and kitchen, bathroom, and home appliances, tools, and utilities. She owns a store in Leeds where you can get any home and tool appliance. Jenny has a degree in literature, but she combines her knowledge and experience with her degree to publish DIY articles on solving home appliances issues to keep up the family enterprise.