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Alpha Laser Core Bits
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At a Glance
Quick Decision Guide
Diameter
3/8"
Drilling Type
Wet Only
Max RPM
12,000
Thread
5/8"-11
Core Bit Design
Laser Welded
Tool Compatibility
High-Speed Angle Grinders
Primary Materials
Porcelain, Granite, Quartz & Marble
Applications
Faucet Holes, Piping Openings & Hard Surface Drilling
Why Choose This Product
Key Benefits
Hard Surface Drilling
Designed for porcelain sintered slabs, granite, quartz and marble
Laser-Welded Construction
Aggressive core bit design for demanding drilling applications
Wet/Dry Options
Sizes 3/4" through 4" support wet or dry drilling
Grinder Compatibility
5/8"-11 thread fits popular high-speed angle grinders
Countertop Drilling
Suitable for faucet-mounting holes in countertops and vanities
Sink Cutout Work
Creates rounded corners for square and rectangular sink openings
Construction Openings
Useful for water, gas and electrical piping penetrations
Extended Tool Compatibility
Can be adapted for hammer drills and rotary hammers with an extension
Product Information
Product Details
Specifications
Brand
Alpha® Part Number
About This Product
Laser-Welded Core Bits for Hard Surface Drilling
Alpha® Laser Core Bits are high-quality, aggressive core bits for drilling porcelain sintered slabs, granite, quartz and engineered stone, marble, and other hard building materials. The laser-welded design supports jobsite drilling across countertop fabrication, installation, construction, and related trades.
Countertop, Vanity and Sink Cutout Applications
The core bits can be used for drilling faucet-mounting holes in countertops and vanities and for creating clean rounded corners when preparing square or rectangular sink cutouts. Their range of diameters also supports openings for water, gas, and electrical piping in compatible materials.
5/8"-11 Thread for High-Speed Grinders
Each core bit uses a 5/8"-11 thread for compatibility with popular high-speed angle grinders. The bits can also be used with a compatible core bit extension for hammer drill or rotary hammer applications, expanding their usefulness beyond handheld grinder drilling.
Wet and Dry Drilling Options
Diameters from 3/4" through 4" support wet or dry drilling, allowing the drilling method to match jobsite conditions and material requirements. The 3/8" and 1/2" core bits are wet-only models. Maximum operating speed is 12,000 RPM for sizes through 2" and 8,400 RPM for 2-1/2", 3", and 4" models.
Product Resources
Documentation & Downloads
Common Questions
Frequently Asked Questions
What materials can Alpha Laser Core Bits drill?
They are designed for hard surfaces including porcelain sintered slabs, granite, quartz and engineered stone, marble, and other compatible building materials.
Can Alpha Laser Core Bits be used wet or dry?
The 3/4" through 4" models are designed for wet or dry drilling. The 3/8" and 1/2" models are wet-only core bits.
What tools are compatible with these core bits?
The core bits have a 5/8"-11 thread for use with compatible high-speed angle grinders. They can also be used with a core bit extension for compatible hammer drill and rotary hammer applications.
Can these core bits drill faucet holes in countertops?
Yes. They are designed for jobsite drilling of faucet-mounting holes in countertops and vanities made from compatible hard surface materials.
Can Alpha Laser Core Bits be used for sink cutouts?
Yes. The core bits can create clean rounded corners for square or rectangular sink openings.
Can these core bits be used for plumbing and electrical openings?
Yes. Their range of diameters makes them suitable for compatible drilling applications involving water, gas, and electrical piping penetrations.
What is the maximum RPM for Alpha Laser Core Bits?
The 3/8" through 2" models have a maximum speed of 12,000 RPM. The 2-1/2", 3", and 4" models have a maximum speed of 8,400 RPM.