- High Compatibility: This set includes a 3-inch diameter core drill bit, three adapters, and one pilot drill, making it compatible with most standard drills and hammer drills.Combine versatility and convenience for various tasks
- Precise Positioning: Our diamond dry coring bit comes with a pilot drill, no need for pre-drilling. The sharp tip quickly penetrates the surface, allowing for faster and more accurate positioning, ensuring smooth operation without switching modes
- Durable & Sturdy: Crafted from quality carbon steel with high-precision welding, this concrete core drill bit boasts 95HRB hardness. It resists heat buildup during high-speed drilling or dry operations, avoiding blade detachment and enhancing longevity
- High-Performance Drilling: Our core bits for concrete features precision-ground teeth for smooth, burr-free edges and faster, accurate cuts. The tooth center aligns with the installation axis, resisting wobbling or shifting during high-speed rotation
- Wide Application: Ideal for drilling through reinforced concrete, red brick, concrete, and foam brick. This core bit is commonly used in air conditioning installations, plumbing, stair railings, highways, airports, and various constructions
- Item Model Number
- dry drill 76*240 5/8-11 internal thread
- Diameter
- 3 in/76 mm
- Inner Thread
- 5/8-11
- Max Drilling Depth
- 9-1/2 in/241 mm
- Welding Method
- Laser Welding
- Wet/Dry Application
- Dry
- Compatible Machines
- Hammer Drills, Drills
- Compatible Cutting Materials
- Reinforced Concrete, Red Bricks, Concrete ,Foam Bricks
- Net Weight (Including Accessories)
- 3.79 lb/1.72 kg
- Product Dimensions
- 10.94 x 3.00 x 3.00 in/278 x 76 x 76 mm
3 Inch Diameter Diamond Core Drill Bit for Clean and Accurate Concrete Cutting
This 3 inch core drill bit creates precise, clean holes in masonry, brick, and concrete with its sturdy diamond coated cutting edge. You can make seamless openings for cables, pipelines, and ventilation systems without damaging the surrounding material, thanks to the wide 3-inch diameter. The tool can maintain a constant cutting motion because the cutting edge remains sharp during use.
Both home users and professionals can benefit from this core drill bit. On hard surfaces, the diamond edge reduces chipping and cracking. You can confidently utilize it for construction, maintenance, and installation work. You may complete your work more quickly and with better results thanks to the tool’s consistent cutting speed.
Carbon Steel Body with 95HRB Hardness for Long Lasting Durability and Heat Resistance
The robust carbon steel body of this core drill bit can handle demanding drilling operations. With frequent usage, the tool can withstand bending, breaking, and surface wear thanks to its 95HRB hardness rating. The bit maintains its shape and cutting strength over time because of its sturdy construction.
During dry drilling and quick operations, the heat-resistant design helps regulate temperature. It reduces the risk that the cutting edge will sustain damage. Additionally, this aspect contributes to the tool’s longevity. For everyday tasks on building sites and household projects, users can rely on this sturdy framework.
Pilot Drill Tip System for Precise Positioning and Faster No-Pre-Drilling Operation
The integrated pilot drill tip helps guide the core drill bit to the surface with greater control. Making a guide hole beforehand is not necessary. During the initial contact with the surface, the bit remains stable and centered thanks to the sharp pilot tip.
This approach increases accuracy and saves time. You do not need to pause to switch tools when moving from one hole to another. For tasks requiring several holes in concrete or walls, this capability is helpful. The pilot tip helps maintain the alignment and straightness of each hole.
Precision-Ground Teeth Design for Smooth 3 Inch Core Drill Bit Cutting
The bit cuts through hard materials with ease thanks to its precisely honed teeth. Without leaving any sharp or fractured fragments surrounding the hole, these teeth produce neat hole edges. This feature reduces the need for additional post-drilling finishing work.
Additionally, this design lessens vibration and shaking when drilling quickly. On dense and thick surfaces, the bit remains stable. The user has more control and safety as a result. The smooth cutting motion supports better outcomes for building, plumbing, and electrical work.
Three Adapter Compatibility Set for Versatile Installation Across Multiple Drill Types
To fit a variety of drills, this 3 inch core drill bit comes with three adapters. With the help of these adapters, you can use the same bit on many machines. This feature lessens the need to purchase additional tools and boosts versatility.
Additionally, the adapter system provides a solid, reliable connection while drilling. It helps transfer power smoothly from the drill to the bit. This feature enhances performance and cutting speed. Both home users and professionals can benefit from this functionality.
Wide Application 3 Inch Core Drill Bit for Concrete and Masonry Projects
This 3 inch core drill bit is suitable for a variety of materials, including masonry, red brick, foam brick, and reinforced concrete. It facilitates jobs like installing stair railings, plumbing, and air conditioning. You can drill clean holes in many building surfaces thanks to the cutting design.
The equipment is appropriate for both home renovation projects and large building sites due to its versatile design. It performs consistently under various operating circumstances. This feature enables users to finish drilling tasks with assurance, precision, and clean results.
9-1/2 Inch Drilling Depth Design for Deep and Efficient Masonry Penetration
This core drill bit can cut deeply into multilayer masonry and heavy concrete walls thanks to its 9-1/2-inch drilling depth. Instead of pausing drilling frequently, this lengthy design lets you work through sturdy materials in a single, seamless process. For tasks requiring deep holes for cables and pipes, it facilitates clean drilling.
This deep cutting length saves time and effort when working on large projects. Drilling long holes does not require constantly switching the equipment or shifting the bit. For plumbing and air conditioning tasks that require precision and depth, this capability is helpful. From beginning to end, the bit maintains a clean drilling path.
5/8-11 Internal Thread Connection for Secure Fit with Standard Drills and Hammer Drills
This 3 inch core drill bit fits most standard drills and hammer drills snugly, thanks to its 5/8-11 internal thread connection. The bit remains stable throughout hard work and rapid drilling thanks to this robust fit. It improves safety and hole accuracy by lessening sliding and shaking.
Additionally, this thread design enables rapid tool changes. Attaching or removing the bit does not require additional time or tools. Users who move between drill bits while working will find this functionality useful. Power flows smoothly from the drill to the bit thanks to the tight connection.








































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