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A diamond core drill bit for granite or granite hole saw is a hollow cylindrical bit that is the cutting part of a core drill.

It leaves a Cylinder shape which often is used as sink holes or to feed lines and pipes. These core bits are made up of a concentration of diamonds and metal bonds in order to cut the hard surface of the granite. Granite core bits are occasionally Segmented and made using a sintering method. The Diamond tool store offers dry core bits, wet core bits, segmented, non coring bits, t seg bits, cnc bits, bits with side protection anymore and more.

A granite core bit is a specialized cutting tool used for drilling holes in granite and other hard stone materials. These core bits are designed to be highly efficient in creating clean and precise holes in granite. They are commonly used in the construction and stone fabrication industries. Here are some key features and uses of granite core bits:

1. 
   Segmented Diamond Cutting Surface: Granite core bits are equipped with a cutting surface that contains industrial-grade diamond segments. These segments are specifically designed to cut through hard and abrasive materials like granite. The diamonds are embedded in a matrix of metal powders and are bonded to the core bit's body.
   
2. 
   Cylindrical Core Removal: When drilling with a granite core bit, it creates a cylindrical core of granite that is removed from the hole. This core can be extracted, leaving a clean and precise hole.
   
3. 
   Wet Drilling: Granite core bits are typically used with a constant water supply (wet drilling) to cool the cutting surface, reduce friction, and control dust. This helps prolong the life of the core bit and ensures a smoother drilling process.
   
4. 
   Variety of Sizes: Granite core bits are available in various sizes, allowing for the drilling of holes with different diameters. The choice of core bit size depends on the specific project requirements and the size of the holes needed.
   
5. 
   Applications: Granite core bits are used in a range of applications, including:
   
   Stone fabrication: Creating holes for sinks, faucets, and other fixtures in granite countertops.
   Construction: Drilling holes in granite for anchor bolts, dowels, and other structural elements.
   Monument and sculpture work: Carving and shaping granite for artistic and architectural projects.
   
   
6. 
   Safety Considerations: When using granite core bits, it's important to take safety precautions, including wearing appropriate personal protective equipment, ensuring proper ventilation to control dust, and following recommended drilling techniques to prevent overheating and extend the core bit's life.
   

Granite core bits are essential tools for professionals working with granite and other hard stone materials. Proper selection of the core bit, along with the use of water cooling and proper drilling techniques, can ensure efficient and precise hole drilling while maintaining the integrity of the stone.