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Alpha Dry Core Bits for Granite, Engineered Stone & Porcelain
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At a Glance
Quick Decision Guide
Diameter
1/2"
Drilling Type
Dry
Max Speed
12,000 RPM
Thread
5/8"-11
Material Compatibility
Granite, Quartzite, Engineered Stone, Porcelain & Crystallized Glass
Maximum Material Thickness
1-1/4"
Tool Compatibility
High-Speed Angle Grinders
Primary Application
Countertop, Vanity & Utility Openings
Why Choose This Product
Key Benefits
Dry Drilling
Drills hard countertop materials without water or slurry
Fast Cutting
Aggressive core design supports high-speed drilling in stone
Jobsite Convenience
Dry operation reduces cleanup during installation work
Broad Material Use
Drills granite, quartzite, engineered stone, porcelain and crystallized glass
Grinder Compatible
5/8"-11 thread fits many popular high-speed angle grinders
Multiple Applications
Creates countertop holes, sink corners and utility openings
Product Information
Product Details
Specifications
Brand
Alpha®
Part Number
DRB00500
UPC
749173461330
Product Type
Dry Core Bit
Diameter
1/2"
Drilling Type
Dry
Maximum Speed
12,000 RPM
Thread
5/8"-11
Maximum Material Thickness
1-1/4"
Compatible Materials
Granite, Quartzite, Engineered Stone, Porcelain & Crystallized Glass
Tool Compatibility
High-Speed Angle Grinders with 5/8"-11 Spindle
Countertop Applications
Faucet-Mounting Holes, Sink Cutout Corners & Other Openings
Utility Applications
Water, Gas & Electrical Piping Openings
Water Required
No
About This Product
High-Speed Dry Drilling for Granite and Engineered Stone
Alpha® Dry Core Bits are aggressive core bits for drilling granite, quartzite, engineered stone, porcelain, and crystallized glass without water. Designed for jobsite use, they can drill through countertop material up to 1-1/4" thick while eliminating the water and slurry associated with wet drilling.
Faucet Holes, Countertops and Sink Cutouts
These dry core bits are suited for drilling faucet-mounting holes in countertops and vanities and can be used to create clean rounded corners for square or rectangular sink cutouts. Their dry operation reduces cleanup on finished jobsites and supports faster countertop fabrication and installation work.
5/8"-11 Thread for High-Speed Angle Grinders
Each core bit has a 5/8"-11 thread for use with many popular high-speed angle grinders and a maximum operating speed of 12,000 RPM. Available diameters from 1/2" through 2" cover countertop drilling as well as openings for water, gas, and electrical piping.
Product Resources
Documentation & Downloads
Common Questions
Frequently Asked Questions
What materials can Alpha Dry Core Bits drill?
They are designed for dry drilling granite, quartzite, engineered stone, porcelain, and crystallized glass.
Do Alpha Dry Core Bits require water?
No. These core bits are designed specifically for dry drilling, reducing the water and slurry cleanup associated with wet drilling.
What tools are compatible with Alpha Dry Core Bits?
The bits have a 5/8"-11 thread and are designed for use with compatible high-speed angle grinders.
What is the maximum RPM for these dry core bits?
Each listed size has a maximum operating speed of 12,000 RPM.
How thick of a countertop can these core bits drill through?
Alpha states that the Dry Core Bits can drill through countertop material up to 1-1/4" thick.
Can these core bits be used for faucet holes?
Yes. They are designed for jobsite drilling of faucet-mounting holes in countertops and vanities.
Can Alpha Dry Core Bits be used for sink cutouts?
Yes. They can be used to create clean rounded corners when making square or rectangular sink cutouts.
Can these core bits be used for utility openings?
Yes. They can be used for openings associated with water, gas, and electrical piping when the material and application are suitable.