We have a good quality core drill bit. We adopt industrial-grade diamond powder and cobalt powder to produce our diamond core bits, so our diamond core bits have a stable drilling performance and superior lifespan. High diamond content yields excellent life and drilling efficiency through heavily reinforced concrete, marble, granite, refractory brick and other hard materials. We use the grade A quality steel tube to ensure the drill bits run precisely.
Core Drill Bit | ToolWits
High-Performance Diamond Core Drill Bit for Concrete, Stone, and Masonry Applications
ToolWits diamond core drill bits are engineered for professional contractors who require fast drilling speed, long service life, and stable performance in the most demanding environments. Manufactured with premium industrial-grade diamond powder, high-strength steel tubes, and advanced alloy bonding technology, these core bits deliver exceptional cutting efficiency on reinforced concrete, granite, marble, brick, masonry blocks, refractory materials, and other hard substrates.
Our core drill bits are designed for wet and dry drilling, offering maximum versatility for construction sites, stone processing factories, renovation work, and installation projects.
🔧 Key Features & Advantages
1. Premium Industrial Diamond Segments
Made using high-grade synthetic diamonds with uniform particle size.
Provides smooth cutting, reduced vibration, and excellent wear resistance.
Optimized segment shape ensures fast penetration even in dense or reinforced materials.
2. Durable Steel Core Tube
Built from heat-treated, high-strength steel for rigidity and stability.
Maintains straight drilling paths and minimizes core bit deformation.
Supports long service life even under heavy-duty, high-RPM operation.
3. Advanced Alloy Bonding Technology
Formulated with cobalt-based alloy powder for enhanced durability.
Provides an ideal balance between drilling speed, temperature control, and life span.
Ensures consistent performance across a wide range of materials.
4. Versatile Drilling Compatibility
Suitable for handheld drills, rig-mounted systems, DTH drilling machines, and wet drilling rigs.
Available in multiple thread types: 1-1/4" UNC, M16, M14, SDS, and custom options.
Custom diameters and lengths available on request.
5. Reliable Performance in Hard Materials
Engineered to handle:
Reinforced concrete
Granite and marble
Sandstone and limestone
Brick, block, and masonry
Refractory stone and fire-resistant materials
6. High Safety Standards
Produced according to ISO9001, CE, and SGS quality certification.
Stable construction reduces risk of segment loss or overheating.
🧱 Applications
ToolWits diamond core drill bits are widely used in:
Construction and civil engineering
Stone factory processing
HVAC, plumbing, and pipeline installation
Electrical conduit and wiring installation
Road and bridge construction
Mining and quarry operations
Perfect for drilling:
Anchor holes
Water pipes and drainage systems
Ventilation openings
Power line passages
Stone countertop and slab openings
📐 Technical Specifications
Material: Diamond powder + alloy powder + high-strength steel
Working Mode: Wet / dry (depending on segment type)
Drilling Diameter: Customizable (30mm – 500mm or more)
Segment Height: 8–15 mm (optional)
Connection Type: M14 / M16 / 1-1/4" UNC / Custom
Application: Concrete, reinforced concrete, granite, marble, masonry
MOQ: 1 piece
Warranty: 1 Year
Origin: Quanzhou, Fujian, China
💼 Why Choose ToolWits Diamond Core Drill Bits?
Over 20 years of manufacturing experience
Strong R&D and custom OEM & ODM capability
Competitive factory-direct pricing
Strict quality control & durability testing
Fast delivery, small order accepted
Professional after-sales support
Packing, Storage, Handling and Transportation
After sales service team:
Technical Team:
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