6mm-125mm Brazed Diamond Core Drill Bits for Stone Cutting

• 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

Engineered for heavy-duty stone processing, these diamond core bits feature 3.8ct/cm² vacuum-brazed diamond coating (40/50 grit) on 65Mn steel bodies. The reinforced hex shank (22.23mm) locks securely in angle grinders (100-150mm disc size), delivering 3x faster drilling than traditional hole saws. Optimized spiral grooves dissipate heat at 5000 RPM, enabling dry cutting of 20mm-thick granite in 15 seconds. Ideal for HVAC installations, plumbing, and construction projects requiring precision holes in mixed materials.

Specification

_{Key Product Features}

[High Quality Diamond Bits]Great for drilling clean holes to hard materials especially tiles, porcelain ground, granite ceramic glass mirror marble stone masonry brick (not for cement, metal, tempered glass, wood, plastic)

[Dry Drilling Design]Diamond drill bit contains cooling wax,Which can reduce the use temperature, dry drilling without water and less pollution. Using them with a drill ( 6mm carbide drill bits)guide to achieve precise drilling results. The diamond drill bits adopts a circular design that is widely used such as hand drill, bench drill

[High Quality Materials]Dry Diamond Drill Bits set is made of high-quality diamond with a nickel plating, which makes them durable, efficient, and resistant to wear and tear. They are designed for dry drilling operations, meaning you don't need to use water, coolant, or lubricant. This feature can help save time and reduce mess

Specifications and Dimensions

Material: Vacuum Brazed Diamond Crown
Diameter Range: 6mm to 150mm
Thread Type: M14
Compatibility: Fits most standard masonry drills
Packaging: Complete set includes multiple sizes, packaged in a durable carrying case

High-Quality Vacuum Brazed Diamond Crown
Provides superior durability and cutting efficiency, ensuring long-lasting performance.
M14 Thread
Ensures a secure fit with most masonry drills, providing stability and precision during drilling.
Wide Diameter Range
Available in diameters from 6mm to 150mm, covering a broad range of drilling needs.
Professional Grade
Built to meet the demands of professional contractors and DIY enthusiasts.
Fast and Accurate Drilling
Delivers quick and precise drilling results, reducing time and effort.
Versatile Applications
Suitable for drilling in marble, granite, porcelain tile, and other masonry materials.

Item No.	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.

Diameter (mm)	Total Length (mm)	Segment Height(mm)	Grit	Thread
6-18	60	15	40/45	M14
20-135	60	15	40/45	5/8-11"
Other size of vacuum brazed diamond core drill bit could be customized

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.