- High Compatibility: This set includes a 3-1/2-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 89*240 5/8-11 internal thread
- Diameter
- 3-1/2 in/89 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)
- 4.34 lb/1.97 kg
- Product Dimensions
- 10.94 x 3.50 x 3.50 in/278 x 89 x 89 mm
3-1/2 Inch Diameter and 9-1/2 Inch Drilling Depth for Deep, Accurate Hole Creation
With its 3-1/2-inch diameter, this VEVOR core drill bit enables users to drill neat, even holes in hard, heavy materials. There is room for pipes, wires, and fittings without the need for additional trimming or shaping, thanks to the large cutting size. The 9-1/2-inch drilling depth allows deep drilling in a single, fluid stroke, reducing work time and minimizing the need to pause and restart the tool.
This type of core drill bit gives users more control when working with masonry, red brick, and concrete. The bit can enter the surface directly without bending or slipping, thanks to its solid body construction. In everyday construction and repair jobs, this function enables both home users and professional workers to do drilling tasks more confidently and with better results.
5/8-11 Internal Thread Design for Secure Fit with Standard Drills and Hammer Drills
The bit fits most common drills and hammer drills snugly thanks to its 5/8-11 internal thread design. This robust connection keeps the bit firmly in place when drilling and lessens vibration. In addition to increasing safety, a tight fit lets the user apply even pressure without worrying about the tool slipping while they are working.
Users can save time during setup by using dry core drill bits with a robust thread system. Even in crowded work locations, changing tools is quick and simple thanks to the straightforward screw on design. On project sites, where users frequently switch between various drilling equipment and surface types, this capability facilitates efficient workflow.
Diamond Dry Coring Bit Construction for Fast, Clean, and Burr Free Cutting Results
The tool requires less effort to cut through hard materials thanks to the diamond dry coring design. To produce clean, smooth holes, the cutting edge maintains even contact with the surface. After drilling, this design keeps the surface clean and minimizes sharp edges.
These cutting systems’ dry core drill bits help minimize post drilling effort. Users do not have to waste time filling or sanding uneven holes. Clean holes enhance the project’s final appearance and fit, which is why this clean cutting action helps with activities like wall fitting, pipe installation, and air conditioner setup.
High Precision Carbon Steel Body with 95HRB Hardness for Heat Resistance and Long Term Durability
The robust carbon-steel body of this core drill bit is hardened to 95 HRB. The bit’s sturdy construction helps it withstand wear and tear from prolonged use and high-speed drilling. By preventing heat accumulation, the steel body shields the bit from premature wear and shape loss.
Over time, users can perform a variety of drilling tasks with durable steel core drill bits. Even under demanding operating conditions, the bit remains steady and sharp because of its sturdy frame. Workers who want a reliable tool for everyday building, maintenance, and installation tasks can benefit from this durable design.
Pilot Drill Integration for Precise Positioning Without Pre-Drilling Requirements
The integrated pilot drill immediately directs the bit to the surface at the proper location. Users can start drilling without first creating a separate hole thanks to this precise guiding point. In addition to keeping the bit centered, the pilot drill lessens slippage on hard or smooth surfaces.
Using dry core drill bits with a pilot drill enhances accuracy and speed. Users can save time and effort by starting and finishing drilling in fewer stages. For jobs where precise hole placement is crucial, such as wall mounting, stair railing installation, and plumbing, this function is ideal.
Precision-Ground Teeth Structure for Dry Core Drill Bits with Wobble-Free
The bit maintains its equilibrium while spinning at high speed thanks to its precision-ground tooth design. To reduce side movement and shaking, the teeth align with the center of the bit. This constant action promotes smooth, controlled drilling and helps protect the surface from damage or fissures.
Users can feel more in control while working with core drill bits that have a reliable cutting system. The fluid motion lessens tool tension and hand strain. When working on hard masonry and thick concrete, where balance and consistent pressure are crucial, this function is useful.
Three-Adapter Compatibility System for Versatile Installation Across Multiple Drill Types
To attach the bit to various drill models, this product includes three adapters. There is no need to purchase additional parts, as the adapter system accommodates a wide variety of drill types. The bit is more adaptable to various tool types and work configurations thanks to its design.
Several adapter options for core drill bits allow customers to remain flexible on construction sites. Employees can switch between tools quickly and without difficulty. Particularly when working in groups or with shared tool areas, this capability speeds up work and helps teams finish tasks more quickly.
Wide Material Application Design for Dry Core Drill Bits in Concrete, Red Brick, Foam Brick, and Masonry Projects
Red brick, foam brick, reinforced concrete, and masonry surfaces all respond nicely to this core drill bit. Users can complete a variety of tasks with a single instrument thanks to its multipurpose design. This functionality reduces the need to change drill bits for different materials.
Both household and commercial customers can benefit from dry core drill bits designed for various surface types. This adaptable design is useful for inside wall projects, pipe installation, building maintenance, and light road construction. This tool is a good option for routine construction and maintenance jobs because it can handle a variety of materials.








































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