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10pcs M14 Dry Vacuum Brazed Diamond Hole Saw Set B - High Quality from China Suppliers and Factory
Product Overview
This is a Black Vacuum Brazed Diamond Drill Core Bit—a high-performance professional tool specially designed for precise drilling on tiles, marble, granite, and various other stone materials. It covers a full size range from 6mm to 130mm, comprehensively fitting diverse drilling scenarios such as home renovation, construction projects, and stone processing. Crafted with premium materials and advanced technology, this drill core bit stands out in durability, efficiency, and usability, becoming an ideal choice for both professionals and DIY enthusiasts.
Key Advantages
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💧Dry Drilling (No Water Needed) The 5–12mm sizes are equipped with built-in high-quality cooling wax. During high-speed rotation, the wax melts to effectively absorb heat, eliminating the need for water cooling. This design simplifies operation, avoids water stains on workpieces and surrounding areas, and makes drilling in narrow spaces or indoor environments more convenient and clean.
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⚡3X Longer Lifespan Adopting advanced vacuum brazing technology, the diamond particles are firmly fused with the steel body, forming a strong metallurgical bond. This ensures 3–5 times longer durability than standard electroplated drill bits, greatly reducing tool replacement frequency and use cost.
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🎯Precise Drilling With optimized diamond distribution and high exposure rate, the drill bit achieves fast drilling speed while minimizing chipping and breakage of workpieces. Its excellent heat dissipation performance prevents thermal damage to brittle materials, ensuring smoother and flatter finished surfaces.
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🔩Wide Application Widely suitable for opening holes in tiles, ceramics, granite, marble, natural stone, concrete walls, and other hard materials, meeting various drilling needs in home decoration, construction engineering, and stone processing fields.
Field Application Diagram
Packaging Options

6 pcs

8 pcs

9 pcs

10 pcs

12 pcs
Frequently Asked Questions
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What sizes are available for this Black Vacuum Brazed Diamond Drill Core Bit?
The drill core bit is available in a full size range from 6mm to 130mm, making it suitable for a wide variety of drilling applications in home renovation, construction, and professional stone processing.
Q
Do I need water cooling when using this drill bit?
For sizes between 5mm and 12mm, no water cooling is required. These sizes are equipped with built-in high-quality cooling wax that melts during high-speed rotation to effectively absorb heat, keeping the operation dry and clean.
Q
How does vacuum brazing technology improve the lifespan of the drill bit?
Vacuum brazing technology fuses diamond particles directly into the steel body through a strong metallurgical bond. This results in a lifespan that is 3 to 5 times longer than standard electroplated drill bits, significantly reducing replacement frequency and overall tool costs.
Q
What materials can this drill core bit be used on?
This drill core bit is designed for tiles, ceramics, granite, marble, natural stone, and concrete walls. It is ideal for home decoration projects, construction engineering, and industrial stone processing applications.
Q
Will this drill bit cause chipping or cracking on delicate stone surfaces?
No. The optimized diamond distribution and high exposure rate minimize chipping and breakage. The excellent heat dissipation design also prevents thermal damage to brittle materials, resulting in smoother and cleaner finished holes.
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What packaging options are available for bulk or retail orders?
The drill core bits are available in multiple packaging configurations including 6-piece, 8-piece, 9-piece, 10-piece, and 12-piece sets, catering to both retail customers and bulk procurement needs.



