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Best Diamond Drill Bit For Porcelain Tile (2024 Updated)

If you’re looking for a tool that can drill holes in porcelain tile without shattering it, then you need a diamond drill bit. But before you go out and buy one, there are certain factors you need to consider. To begin with, you need to pick the correct size that is suitable for the job. The bit size should be smaller than the diameter of the hole you want to drill. Another important factor to consider is the hardness of the tile. If the tile is hard, then you need to use a higher quality and more expensive diamond drill bit.

Furthermore, you need to consider the size of your drill. Make sure to choose a drill bit that is compatible with the type of drill you own. Also, note that not all diamond drill bits are made the same. Some are designed for wet cutting, while others are for dry cutting. If you are drilling through a hard or thick tile, it is recommended that you use a wet-cutting diamond drill bit. This will not only provide better results but it will also increase the lifespan of the bit itself.

Are you tired of wasting money on tile bits that don't deliver the results you need? Do you want a drill bit that can work smoothly and precisely on porcelain tile? You may want to try Diamond Drill Bit for Porcelain Tile. But before you do, there are certain factors you need to consider such as size compatibility with your drill and the hardness of your tile. Keep these in mind and you'll be sure to have the right tool to tackle the job with ease.

10 Best Diamond Drill Bit For Porcelain Tile

# Product Image Product Name Product Notes Check Price
1
The Highdril Diamond Drill Bits Kit is ideal for drilling through porcelain tile, ceramic, marble, brick, and concrete surfaces with precision.
2
The product is ideal for drilling holes in materials such as porcelain tile, ceramic, marble, and brick using diamond core bits.
3
The product is ideal for drilling through hard materials such as granite, ceramic, marble, tile, stone, and glass.
4
This product is ideal for drilling holes in hard materials such as porcelain tile, granite, marble, stone, and brick.
5
The product is ideal for drilling holes in hard materials such as granite, marble, concrete, tile, glass, and hard plastic.
6
Ideal for drilling through hard materials such as granite, porcelain tile, ceramic, and marble with quick change hex shank.
7
Ideal for drilling through hard materials such as granite, marble, porcelain, ceramic, stone, and glass with a round shank.
8
The product is ideal for drilling holes in ceramic, glass, tile, porcelain, marble, and granite with the help of a guide fixture.
9
It is ideal for drilling holes in hard materials such as tile, ceramic, marble, granite, and porcelain.
10
This product is ideal for drilling holes in hard materials such as porcelain tile, ceramic, marble, and granite.
The Highdril Diamond Drill Bits Kit is ideal for drilling through porcelain tile, ceramic, marble, brick, and concrete surfaces with precision.
The product is ideal for drilling holes in materials such as porcelain tile, ceramic, marble, and brick using diamond core bits.
The product is ideal for drilling through hard materials such as granite, ceramic, marble, tile, stone, and glass.
This product is ideal for drilling holes in hard materials such as porcelain tile, granite, marble, stone, and brick.
The product is ideal for drilling holes in hard materials such as granite, marble, concrete, tile, glass, and hard plastic.
Ideal for drilling through hard materials such as granite, porcelain tile, ceramic, and marble with quick change hex shank.
Ideal for drilling through hard materials such as granite, marble, porcelain, ceramic, stone, and glass with a round shank.
The product is ideal for drilling holes in ceramic, glass, tile, porcelain, marble, and granite with the help of a guide fixture.
It is ideal for drilling holes in hard materials such as tile, ceramic, marble, granite, and porcelain.
This product is ideal for drilling holes in hard materials such as porcelain tile, ceramic, marble, and granite.

1. High-Performance Diamond Drill Set For Multiple Surfaces

The Vacuum Dry/Wet Brazed Diamond Drilling Bits Core Bits set is perfect for drilling through a variety of materials including ceramic, tiles, porcelain tile, granite, marble, stone, masonry, and brick. This kit includes six different sizes (25/35/45/50/65/75mm) with one piece each, as well as two 20mm finger bits for added convenience.

Made using high-quality diamond and steel through vacuum brazed diamond technology, this tiling installation kit is highly efficient, durable, and strong. It is capable of drilling through materials quickly, making it a top choice for professionals and DIY enthusiasts alike.

This kit is compatible with most angle grinders for dry/wet drilling, and an SDS or HEX shank adaptor is required for use with electric drills. The recommended speed for this kit is 6000RPM, with a maximum speed of 11000RPM. Additionally, this kit comes with an aluminum portable suitcase for easy storage and transportation, as well as to protect the core bit.

Pros

  • Suitable for drilling through various materials including ceramic, tiles, porcelain tile, granite, marble, stone, masonry, and brick
  • Made with high-quality diamond and steel through vacuum brazed diamond technology for high efficiency and durability
  • Capable of drilling through materials quickly
  • Compatible with most angle grinders for dry/wet drilling
  • Comes with an aluminum portable suitcase for easy storage and transportation

Cons

  • – Requires an SDS or HEX shank adaptor for use with electric drills

2. Diamond Core Drill Set For Tile & Marble

Upgrade your drilling experience with this 6-piece core drill bit set and 25mm finger bit. The set includes drill bits of various sizes (25/35/45/51/65/76mm) suitable for dry or wet drilling on materials such as porcelain tile, granite, marble, brick, and other similar materials. The finger bits are perfect for enlarging, shaping, or rounding bevels on existing holes in porcelain, marble, granite, and hard ceramic. The vacuum brazed technology ensures a longer working life, fast, and smooth drilling experience. This set is perfect for professional use and DIY projects alike. Get ready to drill your way through any material with ease.

The 6-piece core drill bit set and 25mm finger bit are perfect for drilling through porcelain tile, granite, marble, brick, and other similar materials. The set includes drill bits of various sizes, ensuring that you always have the right tool for the job. The finger bits are perfect for enlarging, shaping, or rounding bevels on existing holes in porcelain, marble, granite, and hard ceramic. The vacuum brazed technology provides a longer working life, fast, and smooth drilling experience. Whether you are a professional or a DIY enthusiast, this set is perfect for all your drilling needs.

This 6-piece core drill bit set and 25mm finger bit are a must-have for anyone looking to drill through porcelain tile, granite, marble, brick, and other similar materials. The set includes drill bits of various sizes, making it easy to find the right tool for the job. The finger bits are perfect for enlarging, shaping, or rounding bevels on existing holes in porcelain, marble, granite, and hard ceramic. The vacuum brazed technology ensures a longer working life, fast, and smooth drilling experience. This set is perfect for both professional and DIY use.

Pros

  • Suitable for dry or wet drilling on various materials
  • Vacuum brazed technology provides a longer working life
  • Fast and smooth drilling experience
  • Perfect for professional and DIY use

Cons

  • – Delivery takes 5-7 business days from China

3. Diamond Drill Bits For Hard Materials With Storage.

Looking for a versatile tool that can help you drill clean holes into hard materials? Look no further than the 5 Pieces of Dry Diamond Core Drill Bits Kit! With the ability to drill holes with a diameter of 1/4 inch (6mm), 5/16 inch (8mm), 3/8 inch (10mm), and 1/2 inch (12mm), this kit is perfect for drilling into tiles, porcelain ground, granite, ceramic, glass, mirror, marble, stone, masonry, and brick (but not for wood).

Featuring vacuum brazed diamond technology, these drill bits are designed to provide you with clean, precise holes every time. The dry drilling design means that the diamond drill bit is integrated with wax lubricant inside, which melts while dry drilling and cools the cutting surface. Water can also be used as additional cooling to prolong the life of the bit.

These diamond drill bits also boast a number of unique details that make them stand out from the competition. The diamond coating enhances the drilling speed, while the round shank is compatible with most machines, such as hand drills, angle grinders, and bench drills. The side flutes help to remove debris and drill holes smoothly and quickly, while the depth mark is useful for precise projects.

And when you're done with your drilling project, this Diamond Drill Bits set comes with a portable storage case for convenient use and storage. So why wait? Add versatility to your tool today with the 5 Pieces of Dry Diamond Core Drill Bits Kit!

If you encounter any problems in using the products, please feel free to contact the seller for satisfactory customer service.

Pros

  • Can drill into a variety of hard materials
  • Vacuum brazed diamond technology for clean, precise holes
  • Dry drilling design with wax lubricant and water cooling
  • Diamond coating enhances drilling speed
  • Round shank compatible with most machines
  • Side flutes help remove debris and drill holes smoothly
  • Depth mark useful for precise projects
  • Comes with a portable storage case

Cons

  • – Not suitable for drilling into wood

4. Diamond Core Drill Bit Set For Stone & Tile.

The Diamond Drill Bit Set is a versatile tool that can be used for dry or wet drilling on various surfaces including porcelain tile, granite, marble, stone, masonry, and brick. The set includes two different diameters, 6-16mm and 19-152mm, with maximum working depths of 35mm and 50mm respectively. The diamond height is 10mm and 15mm for the two diameters, and the total length is 62mm and 75mm respectively.

The set comes with a 5/8"-11 female thread and is recommended to be used with an angle grinder. However, if you wish to use them with an electric drill or any other machine, an adapter will be required. The product is shipped from their own American warehouse, and can be delivered within 1-6 business days without any shipping fees.

Pros

  • Versatile tool for dry or wet drilling on various surfaces
  • Two different diameters for maximum working depths of 35mm and 50mm
  • Diamond height of 10mm and 15mm for the two diameters respectively
  • Shipped from their own American warehouse without any shipping fees

Cons

  • – Requires an adapter to be used with electric drill or any other machine

5. Bgtec Diamond Core Drill Bit Set.

The 6mm (1/4 inch) diameter Diamond Tipped Drill Bits with a diamond length of 8mm are designed for multi-purpose drilling on various surfaces, including granite, marble, masonry, concrete, tile/ceramic, glass, and hard plastic. These round shank drill bits are suitable for all-purpose drilling and can easily penetrate various surfaces with precision and accuracy.

These Diamond Tipped Drill Bits are equipped with wax cores built-in for cooling and lubrication during the drilling process. The special design of the drill bit includes a hole and groove on the side for removing stone chips, preventing any damage to the surface being drilled. The vacuum brazed diamond technology provides high efficiency while cutting faster, making them durable and sturdy.

These drill bits can be used for dry drilling without water, but using water can extend the life of the bit and improve its performance. These versatile drill bits are perfect for DIY projects and professional use alike, providing reliable and efficient drilling capabilities for a variety of surfaces.

Pros

  • Suitable for multi-purpose drilling on various surfaces, including granite, marble, masonry, concrete, tile/ceramic, glass, and hard plastic
  • Equipped with wax cores built-in for cooling and lubrication during drilling
  • Special design includes a hole and groove on the side to remove stone chips, preventing surface damage
  • Vacuum brazed diamond technology provides high efficiency while cutting faster, making them durable and sturdy
  • Can be used for dry drilling without water, but using water can extend the life of the bit and improve performance

6. Swiftfit Diamond Bits For Stone & Ceramic Tiles.

The Universal 1/4 inch Hex Shank of this product is designed to fit a variety of quick-change chucks, drills or drivers, adding versatility to your tools. It comes with three sizes of Dry Diamond Core Drill Bits, ideal for drilling holes with a diameter of 1/4“ (6mm), 5/16” (8mm) and 3/8” (10mm). The Vacuum Brazed Diamond Technology makes it great for drilling clean holes in hard materials, such as tiles, porcelain ground, granite, ceramic, glass, mirror, marble, stone, masonry and brick (but not for wood).

The Dry Drilling Design of the Diamond Drill Bit is integrated with wax lubricant inside, which melts while dry drilling and cools the cutting surface. Water can also be used as an additional cooling method to prolong the life of the bit. The diamond coating enhances the drilling speed, and the depth mark is useful for precise projects. It also comes with a portable storage case for convenient use and storage.

If you encounter any problems while using this product, don't hesitate to contact the manufacturer for satisfactory customer service.

Pros

  • Universal 1/4 inch Hex Shank fits a variety of quick-change chucks, drills or drivers, adding versatility to your tools
  • Comes with three sizes of Dry Diamond Core Drill Bits, ideal for drilling holes with different diameters
  • Vacuum Brazed Diamond Technology makes it great for drilling clean holes in hard materials
  • Dry Drilling Design is integrated with wax lubricant inside, which melts while dry drilling and cools the cutting surface
  • Diamond coating enhances the drilling speed
  • Depth mark is useful for precise projects
  • Comes with a portable storage case for convenient use and storage

Cons

  • – Not suitable for drilling wood

7. Small Diamond Bit Set For Hard Surfaces

The Dry Diamond Core Drill Bits Kit includes 10 pieces for drilling holes with a diameter of 1/4 inch (6mm). These bits are ideal for drilling clean holes in hard materials such as tiles, porcelain, granite, ceramic, glass, mirror, marble, stone, masonry, and brick. However, they are not suitable for wood.

The Diamond Drill Bit is made of carbide and has wax lubricant integrated inside. This lubricant melts while dry drilling and cools the cutting surface. Additionally, water can be used as an additional cooling agent to prolong the life of the bit.

Diamond coating on the bits enhances the drilling speed, and the round shank is compatible with most machines such as Hand Drill, Angle Grinder, and Bench Drill. The depth mark is also useful for precise projects.

This Diamond Drill Bits set comes with a portable storage case, making it easy to carry and store.

If you encounter any problems or are not satisfied with the product, please feel free to contact the manufacturer for assistance.

Pros

  • Effective for drilling clean holes in hard materials such as tiles, porcelain, granite, ceramic, glass, mirror, marble, stone, masonry, and brick
  • The carbide construction with integrated wax lubricant helps in melting and cooling the cutting surface while dry drilling
  • Diamond coating on the bits enhances the drilling speed
  • Round shank is compatible with most machines such as Hand Drill, Angle Grinder, and Bench Drill
  • Depth mark is useful for precise projects
  • Portable storage case for easy carrying and storage

Cons

  • – Not suitable for drilling in wood

8. Diamond Tile Hole Saw Kit With Guide Jig.

The 15-piece diamond hole saw set is made of strong and sturdy diamond integrated steel, making it firm, sharp, and long-lasting. The top is covered with thickened diamond coating, providing excellent cutting strength for high-precision, smooth cuts. The surface adopts high anti-corrosion electroplating process, ensuring long-term durability. To extend the service life of the hole saw, it is recommended to reduce drilling speed and pressure and increase the use of water lubrication.

The upgraded double suction cup design provides a more powerful suction force than the single suction cup, ensuring that the hole saw can firmly absorb smooth surfaces and effectively fix the drilling position. The precise positioning system firmly clamps the hole saw, preventing slipping and damage to objects due to improper operation. The adjustable size is 4mm-83mm, making it easy to use on various surfaces.

The hole saw set is easy to use, and only four simple steps are required. First, clean the surface and mark the drilling position. Second, place the hole saw into the positioner and adjust the location of the hole. Third, press the double suction cups positioning system of the positioner and fix the hole saw by adjusting the positioning shaft wheel. Finally, complete the drilling work under the lubrication of water. Detailed instructions are included in the package.

The package includes 15 professional integrated steel diamond hole saws, ranging from 6mm / 0.24 inches to 50mm / 1.97 inches in size. It also includes 1 double suction cups ceramic tile holes locator, 1 screwdriver for cleaning up debris left in the hole saw after drilling, and 1 product manual. This diamond hole saw kit with drill guide is suitable for smooth surfaces such as ceramic tiles, ceramics, glass (except tempered glass), marble, granite, and terrazzo. One set is enough to greatly improve work efficiency and save time and energy.

If you have any questions or dissatisfaction with the product, the manufacturer offers satisfactory after-sales service. Please contact them first for assistance.

Pros

  • Made of strong and sturdy diamond integrated steel for long-lasting durability
  • Thickened diamond coating on the top provides excellent cutting strength for high-precision, smooth cuts
  • High anti-corrosion electroplating process ensures long-term durability
  • Upgraded double suction cup design provides a more powerful suction force than the single suction cup, ensuring firm absorption and accurate positioning
  • Adjustable size is 4mm-83mm, making it easy to use on various surfaces
  • Easy to use, only four simple steps are required
  • Package includes 15 professional integrated steel diamond hole saws, ranging from 6mm / 0.24 inches to 50mm / 1.97 inches in size
  • Suitable for smooth surfaces such as ceramic tiles, ceramics, glass (except tempered glass), marble, granite, and terrazzo
  • One set can greatly improve work efficiency and save time and energy
  • Satisfactory after-sales service is offered by the manufacturer

9. Diamond Hole Saw Set – 5 Pieces

The diamond drill bit set is an ideal tool for drilling through hard materials like tile, granite, marble, porcelain, and ceramic. It comes in four different diameters of 1/4 inch, 5/16 inch, 3/8 inch, and 1/2 inch, with a 10mm diamond height. The set is equipped with a 1/4 inch hexagonal shank, making it compatible with all types of drills and cordless screwdrivers. The diamond drill bit is designed with an integrated wax lubricant that melts while dry drilling and cools the cutting surface. This feature allows for longer drilling without wearing out the bit on larger projects. To prolong the life of the dry core bit, it is recommended to begin drilling at a 45° angle between the hole saw and the working surface and apply only moderate pressure.

The diamond drill bit set is a reliable and efficient tool to make holes in extremely hard surfaces such as granite, porcelain, ceramic, and marble. With its four different sizes of 1/4 inch, 5/16 inch, 3/8 inch, and 1/2 inch, it is a versatile tool for a wide range of applications. The set is designed with a 1/4 inch hexagonal shank, making it compatible with various drills and cordless screwdrivers. The diamond drill bit has an integrated wax lubricant that melts while dry drilling and cools the cutting surface, allowing for longer drilling without causing much wear on the bit. However, to ensure a longer service life of the dry core bit, it is advised to start drilling at a 45° angle and apply moderate pressure.

The diamond drill bit set is a must-have tool for DIY enthusiasts and professionals alike. It is designed to drill in hard materials like ceramic, tile, granite, marble, and porcelain, and comes in four different sizes of 1/4 inch, 5/16 inch, 3/8 inch, and 1/2 inch, with a 10mm diamond height. The set is equipped with a 1/4 inch hexagonal shank, making it compatible with all types of drills and cordless screwdrivers. The diamond drill bit features an integrated wax lubricant that melts while dry drilling, cooling the cutting surface and allowing for longer drilling without much wear on larger projects. To ensure a longer service life of the dry core bit, it is recommended to apply only moderate pressure and start drilling at a 45° angle between the hole saw and the working surface.

Pros

  • Four different diameters of 1/4 inch, 5/16 inch, 3/8 inch, and 1/2 inch, with a 10mm diamond height
  • Equipped with a 1/4 inch hexagonal shank, making it compatible with all common drills and cordless screwdrivers
  • Integrated wax lubricant melts while dry drilling and cools the cutting surface, allowing for longer drilling without much wear on larger projects
  • Ideal for drilling in extremely hard materials such as tile, ceramic, marble, granite, porcelain, and more

Cons

  • – Requires moderate pressure during drilling to prolong the life of the dry core bit

10. Brschnitt Diamond Drill Bit Set – 9pcs.

The Size Diamond drill bit set includes 8 pieces of diamond drill bits with sizes ranging from 1/4" to 2" (6mm to 50mm) and a diamond height of 10mm. These bits come with a Triangle Shank and a total length of 65mm. The Size Diamond chamfer bit measures 1-3/8" (35mm) with a workable length of 35mm and a Grit #80. It comes with a Hex Shank and a total length of 62mm with a Top Angle of 53 degrees. These diamond core bits are perfect for dry drilling holes through hard porcelain tile, ceramics, bathroom tile, granite & marble, masonry, concrete, glass, and hard plastic with ease. Using water could prolong its lifetime. These diamond bits are made with super quality raw material using vacuum brazed technology, which increases resistance to temperature and friction, making the diamond particles better attach to the core steel, improving the performance and lifetime. The high-quality core steel body helps to be more efficient and durable, not easy to deform. These bits are suitable for any electric drill, hand drill, and bench drill. When using an Angle Grinder, please install an angle grinder drill chuck.

The Size Diamond drill bit set comes with a wide range of sizes that can cater to various drilling needs. The diamond height of 10mm ensures that it can drill through hard materials with ease. The vacuum brazed technology used in making these bits increases their durability and efficiency. The high-grade diamond grit ensures effortless cutting and improved durability in tough applications. The core steel body adds to the durability and strength of the bits.

The Size Diamond chamfer bit is made with high-quality material and is perfect for achieving precise results. The Hex Shank ensures a secure grip while drilling, and the Top Angle of 53 degrees is perfect for chamfering. The Grit #80 ensures that it can work efficiently on hard materials.

These bits are versatile and can be used for various applications such as drilling through hard porcelain tile, ceramics, bathroom tile, granite & marble, masonry, concrete, glass, and hard plastic. Using water while drilling can help prolong the lifetime of the bits.

Pros

  • Comes with a wide range of sizes to cater to various needs
  • Made with super quality raw material using vacuum brazed technology, which increases resistance to temperature and friction
  • Constructed with high-grade diamond grit for effortless cutting and improved durability in tough applications
  • The high-quality core steel body adds to the durability and strength of the bits
  • Versatile and can be used for various applications such as drilling through hard porcelain tile, ceramics, bathroom tile, granite & marble, masonry, concrete, glass, and hard plastic

Cons

  • – May not be suitable for drilling through very hard materials without using water

Best Diamond Drill Bit For Porcelain Tile FAQs

Can diamond drill bits for porcelain tile be used on other materials?

Diamond drill bits are commonly used for drilling on porcelain tiles due to their ability to cut through hard and brittle materials. However, these drill bits can also be used on other materials such as granite, marble, glass and ceramics. It is important to note that diamond drill bits come in different sizes and shapes to cater to different materials and applications. Therefore, it is essential to choose the right type of diamond drill bit for the specific material you intend to drill. Using the wrong type of drill bit can lead to damage of both the material and the drill bit. It is also important to use the right drilling technique, such as applying a constant and gentle pressure to avoid chipping or cracking the material. Overall, diamond drill bits are versatile and can be used on different materials, but proper selection and technique are crucial for successful drilling.

How do I use a diamond drill bit for porcelain tile?

Using a diamond drill bit for porcelain tile requires some special considerations to ensure that you get the best results. First, you need to choose the right size of drill bit that matches the size of the hole you want to make. Secondly, you need to prepare the tile surface by marking the spot where you want to drill and then placing a small piece of masking tape over it.

Next, you need to apply a steady and even pressure on the drill bit while keeping it at a low speed. It's important to avoid applying too much pressure or drilling too fast, as this can cause the bit to overheat and damage the tile. Instead, let the bit do the work and allow it to cool down periodically by dipping it in water.

As you drill, keep the surface wet with water to prevent overheating and to help flush away the debris. Once the hole is complete, remove the masking tape and clean up any remaining debris. With these tips in mind, you can use a diamond drill bit for porcelain tile with confidence and precision.

How long will a diamond drill bit for porcelain tile last?

A diamond drill bit is an essential tool when it comes to drilling porcelain tile. This type of drill bit is specially designed to handle the hardness and toughness of porcelain tile. The longevity of a diamond drill bit for porcelain tile depends on several factors. First, the quality of the drill bit plays a significant role in its lifespan. A high-quality diamond drill bit will last longer compared to a low-quality one. Second, the frequency of use and the amount of pressure applied during drilling can affect the drill bit's lifespan. Finally, the type of porcelain tile being drilled can also impact the drill bit's longevity.

Generally, a good quality diamond drill bit used for porcelain tile can last between 15 to 20 holes before it starts to lose its effectiveness. However, this lifespan can vary depending on the factors mentioned above. It is essential to take care of the drill bit by cleaning it after use and storing it properly to prolong its lifespan. In conclusion, a diamond drill bit for porcelain tile can last for 15 to 20 holes or more depending on the quality of the bit, frequency of use, and type of porcelain tile being drilled.

What is the best diamond drill bit for porcelain tile?

When it comes to drilling porcelain tile, a diamond drill bit is the most effective tool to use. However, not all diamond drill bits are created equal. The best diamond drill bit for porcelain tile should have a durable and high-quality diamond coating that can withstand the hardness of the tile without losing its sharpness. The bit should also have a smooth and precise cutting edge that can create clean and accurate holes without chipping or cracking the tile.

One of the top choices for a diamond drill bit for porcelain tile is the DiamondSure brand. Their diamond drill bits are made with high-quality industrial diamonds and a unique bonding process that ensures maximum durability and precision. Other top brands to consider include the Bosch GT3000 and the DEWALT DW1361.

It's important to note that using the right technique and lubrication when drilling porcelain tile is just as important as using the right drill bit. Always start with a small pilot hole and gradually increase the size, and use plenty of water or a lubricant to prevent overheating and damage to the tile.

What size diamond drill bit should I use for porcelain tile?

When it comes to drilling through porcelain tiles, choosing the right size diamond drill bit is crucial. The size of the drill bit you need depends on the size of the hole you want to make. If you are looking to make a small hole, then a diamond drill bit with a smaller diameter would be the right choice. On the other hand, if you want to create a larger hole, then you need to choose a diamond drill bit with a larger diameter.

It is recommended that you use diamond drill bits that are specifically designed for drilling through porcelain tiles. These drill bits have a diamond coating that helps to cut through the hard surface of the tile. Additionally, they also have a cooling mechanism that prevents the drill bit from overheating and breaking.

In general, a diamond drill bit with a diameter of 6mm to 10mm is suitable for drilling through porcelain tiles. However, it is always better to measure the size of the hole you need to make and choose the drill bit accordingly. Remember to use a slow speed and apply light pressure while drilling to avoid damaging the tile.

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