Customizable Vacuum Brazed Diamond Core Drill Bits for Granite

• Customization: Available
• Customized: Non-Customized
• Standard: API
• Length: Jobber-length
• Type: Core Drill Bit
• Material: Diamond
• Usage: Masonry Drilling, Stone
• Transport Package: Carton
• Specification: 1/4" ~ 2"
• Trademark: ODT or OEM
• Origin: China
• HS Code: 8501
• Production Capacity: 300000/Day

Product Description

Product Description

Professional-grade diamond-coated core drill bit set engineered for precision drilling in hard materials. Featuring vacuum brazed diamond segments and high-strength steel body, these bits deliver 5x longer lifespan than conventional drill bits. The optimized spiral flute design ensures efficient debris removal and heat dissipation, while the vacuum suction base stabilizes the tool during operation for crack-free results. Compatible with all standard power drills (corded/cordless), ideal for construction, plumbing, and DIY projects on marble, granite, glass, and ceramic tiles

Specification

_{Key Product Features}

_{Vacuum Brazed Diamond Coating: Superior wear resistance for 100+ holes per bit.
6 Size Options: 20mm-100mm diameters cover most drilling needs.
Anti-Vibration Design: Vacuum suction base prevents slippage and material damage.
High-Speed Cooling: Spiral grooves reduce heat buildup by 40%.
Universal Compatibility: Works with 1/2" and 3/8" chuck drills 
Multi-Material Capacity: Effortlessly drills through marble, glass, ceramic,} and _{reinforced concrete.}

Specifications and Dimensions

Materials: Diamond Coated Steel
Drill Bit Sizes: 10mm, 15mm, 20mm, 25mm, 30mm (other sizes available upon request)
Hole Saw Cutter Sizes: 50mm, 75mm, 100mm (other sizes available upon request)
Compatibility: Fits most standard power drills and vacuum systems
Packaging: Complete set includes multiple drill bits and hole saw cutters, packaged in a durable carrying case

Specification	Diamond Grit Size	Threaded Interface
5mm-150mm (Customizable)	6~18mm (46#) 20mm and above (36#)	M14
This product is suitable for making holes in hard materials such as marble, concrete, granite slabs, and full porcelain tiles. It is sharp, durable, with a clean cut, and easy to use.

Drawings & Dimensions

Detailed CAD drawings and dimensional diagrams are available for download here or upon inquiry. Our engineering team can provide tailored designs to meet specific project requirements.

Why Choose Us?

Other Products

OEM/ODM capabilities
Competitive pricing & bulk discounts
Fast shipping & customs clearance support
Turnkey project solutions

Packaging & Shipping

FAQ

Q: Can it drill through 10mm thick tempered glass?
A: Yes, use water cooling and maintain 800-1200 RPM for best results.

Q: How to attach the vacuum base?
A: Press the base firmly on flat surfaces – the suction cup self-seals in 3 seconds.

Q: Is water cooling mandatory?
A: Required for glass and reinforced concrete; optional for tiles and marble.

Q: What's the diamond grit size?
A: 50/60 grit for fast cutting, 80/100 grit for smooth finishes.

Q: Compatible with hammer drills?
A: Only for rotary mode. Hammer function will damage the diamonds.