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7pcs Vaccum Brazed Diamond Dry Drill Bit Hex Handle Hole Saw

5pcs Vaccum Brazed Diamond Dry Drill Bit Hex Handle Hole Saw

3pcs-16 Vaccum Brazed Diamond Dry Drill Bit Hex Handle Hole Saw （SET G）

3pcs-14 Vaccum Brazed Diamond Dry Drill Bit Hex Handle Hole Saw （SET F）

3pcs-12 Vaccum Brazed Diamond Dry Drill Bit Hex Handle Hole Saw （SET E）

3pcs-10 Vaccum Brazed Diamond Dry Drill Bit Hex Handle Hole Saw （SET D）

3pcs-8 Vaccum Brazed Diamond Dry Drill Bit Hex Handle Hole Saw （SET C）

3pcs-6 Vaccum Brazed Diamond Dry Drill Bit Hex Handle Hole Saw （SET B）

3pcs-5 Vaccum Brazed Diamond Dry Drill Bit Hex Handle Hole Saw （SET A）

0102030405

6pcs M14 Dry Vacuum Brazed Diamond Hole Saw （SET B)

6pcs M14 Dry Vacuum Brazed Diamond Hole Saw Set from China Suppliers & Factory for Tile, Marble, Granite Drilling 6mm-120mm

Introducing our premium 6mm-120mm M14 Dry Vacuum Brazed Diamond Drill Core Bits, the perfect tools for drilling precise holes in tile, marble, granite, and stone. Manufactured by leading suppliers in China, these durable hole saw tools are designed to provide efficiency and superior performance. Our factory utilizes advanced technology to ensure each bit meets high-quality standards, making them a reliable choice for professionals and DIY enthusiasts alike. Enhance your drilling experience with our top-of-the-line diamond drill core bits and achieve exceptional results every time

Brand Name HEYIDA
Origin Mainland China
Type Core Drill Bit
Material Diamond
Length 60mm
DIY Supplies Tiling
Use Masonry Drilling
Measurement unit piece/pieces
Each pack 1
THREAD M14 THREAD
Machine M14 Angle Grinder
Specification 6mm-120mm
Color Blue
Manufacturing technology Vacuum Brazed

Product Details

Product Overview

M14 Blue Vacuum Brazed Diamond Core Drill Bits: High-Performance Dry Drilling Solution

Our M14 Blue Vacuum Brazed Diamond Core Drill Bits are professional-grade drilling tools engineered for precision and durability across a wide range of hard materials. Crafted with high-quality diamond particles and steel substrates, these bits feature a standard M14 thread that is universally compatible with most angle grinders on the market, ensuring easy and stable installation for both professionals and DIY enthusiasts.

Available in 32 precise sizes from 6mm to 120mm, this series covers nearly all drilling needs for home renovations and industrial projects. Each bit has a total height of 60mm with a 15mm diamond working layer, optimized for consistent drilling depth and efficiency. The striking blue coating not only enhances corrosion resistance but also allows for easy identification on job sites.

The core advantage lies in its advanced vacuum brazing technology, which creates an ultra-strong bond between diamonds and the steel body. This technology delivers 3 to 5 times longer service life than traditional electroplated bits, with industry data showing it can drill over 40 clean holes in hard porcelain tiles before needing replacement. It also ensures a high diamond exposure rate, enabling faster, more aggressive drilling while minimizing heat generation and material chipping.

A key feature is its dry drilling capability, eliminating the need for water cooling. For smaller sizes (6mm–12mm), an integrated wax core provides automatic cooling during operation, preventing overheating and extending tool life. These bits are ideal for drilling precise, chip-free holes in ceramic tiles, granite, marble, natural stone, pebbles, and concrete walls, making them a cost-effective and time-saving solution for tiling, plumbing, and masonry projects.

Product Descriptions

Material	Diamond
Total Height	60mm
Diamond Height	15mm
Available Sizes	6mm / 8mm / 10mm / 12mm / 14mm / 16mm / 18mm / 20mm / 22mm / 25mm / 28mm / 30mm / 32mm / 35mm / 38mm / 40mm / 42mm / 45mm / 50mm / 55mm / 60mm / 65mm / 68mm / 70mm / 75mm / 80mm / 85mm / 90mm / 95mm / 100mm / 110mm / 120mm

Features

💧Dry drilling without water feeding — 6mm–12mm bits with wax inside helps cooling the bits
🔩Wide application for drilling tile, ceramic, granite, marble, stone and more
⚡Vacuum Brazed technology provides much longer working life than electroplated ones (generally 3–5 times)
✅Less chipping, minimizing breakage, less heat generation, better finish quality
💎High diamond exposure rate provides faster and more aggressive drilling
💰Save your money and time

🎯 Application: Used for opening holes in marble, ceramic tiles, granite, pebbles, walls and other materials

📦 Package Includes:
1 × Diamond Drill Core Bits

⚠️ Note:

1. Due to manual measurement, please allow 1–3mm error, thank you.

2. Due to shooting conditions such as lighting, there may be slight color differences — please be aware.

Tool Demonstration Images

M14 Blue Vacuum Brazed Diamond Core Drill Bit

M14 Vacuum Brazed Diamond Core Drill Application

Frequently Asked Questions (FAQ)

Q What is the thread size of these diamond core drill bits?

These drill bits feature a standard M14 thread, which is universally compatible with most angle grinders available on the market. This ensures quick, stable, and secure installation without the need for any adapters.

Q Do these bits require water cooling during use?

No — these bits are designed for dry drilling and do not require water feeding. For smaller sizes (6mm–12mm), an integrated wax core inside the bit automatically provides cooling during operation, preventing overheating and extending tool life.

Q What materials can these diamond core drill bits be used on?

These bits are suitable for drilling precise holes in a wide range of hard materials including ceramic tiles, granite, marble, natural stone, pebbles, and concrete walls. They are ideal for tiling, plumbing, and general masonry projects.

Q How long do vacuum brazed bits last compared to electroplated bits?

Vacuum brazed diamond bits generally last 3 to 5 times longer than traditional electroplated bits. The advanced brazing process creates an ultra-strong bond between the diamond particles and the steel body, significantly improving durability and cutting efficiency.

Q What sizes are available in this series?

This series offers 32 precise sizes ranging from 6mm to 120mm, including: 6, 8, 10, 12, 14, 16, 18, 20, 22, 25, 28, 30, 32, 35, 38, 40, 42, 45, 50, 55, 60, 65, 68, 70, 75, 80, 85, 90, 95, 100, 110, and 120mm — covering virtually all drilling needs for home and industrial projects.

Q Will the color of the bit look exactly as shown in the product photos?

The product photos are captured under specific lighting conditions, which may cause slight color differences compared to the actual item. The bits feature a distinctive blue coating that enhances corrosion resistance and aids in easy job-site identification. Please allow for minor visual variations due to screen calibration and photography lighting.