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Alpha Laser Diamond 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
Drills porcelain, sintered slabs, granite, quartz and marble
Laser-Welded Construction
Supports aggressive drilling through demanding materials
Wet/Dry Options
Sizes 3/4" through 4" support wet or dry drilling
Grinder Compatibility
5/8"-11 thread fits compatible high-speed angle grinders
Countertop Drilling
Creates faucet-mounting holes in countertops and vanities
Sink Cutout Preparation
Produces rounded corners for square and rectangular openings
Utility Openings
Accommodates water, gas and electrical piping penetrations
Extended Tool Compatibility
Works with appropriate drills and rotary hammers using an extension
Product Information
Product Details
Specifications
Brand
Alpha® Part Number
About This Product
Laser-Welded Diamond Core Bits for Hard Surfaces
Alpha® Laser Diamond Core Bits are aggressive core drill bits for drilling porcelain and sintered slabs, granite, quartz, engineered stone, marble, and other hard building materials. Their laser-welded construction supports demanding countertop fabrication, installation, and construction drilling applications.
Coring Bits for Countertops and Sink Cutouts
The core bits create faucet-mounting holes in countertops and vanities and rounded corners for square or rectangular sink cutouts. Available diameters from 3/8" through 4" also accommodate openings for water, gas, and electrical piping in compatible materials.
5/8"-11 Core Drill Bits for High-Speed Grinders
Each diamond core drill bit has a 5/8"-11 thread for use with compatible high-speed angle grinders. A compatible core bit extension also allows the coring bits to be used with appropriate hammer drills and rotary hammers.
Wet and Dry Diamond Core Drilling Bits
The 3/4" through 4" sizes support wet or dry drilling, while the 3/8" and 1/2" core bits are wet-use-only. Sizes through 2" have a maximum operating speed of 12,000 RPM, while the 2-1/2", 3", and 4" models are rated for a maximum of 8,400 RPM.
Product Resources
Documentation & Downloads
Common Questions
Frequently Asked Questions
What materials can Alpha Laser Diamond Core Bits drill?
The core bits drill porcelain and sintered slabs, granite, quartz, engineered stone, marble, and other compatible hard building materials.
Can Alpha Laser Core Bits be used wet or dry?
The 3/4" through 4" models support wet or dry drilling. The 3/8" and 1/2" models are wet-use-only diamond core bits.
What sizes are Alpha Laser Diamond Core Bits available in?
The series includes diameters from 3/8" through 4" for countertop, sink cutout, and utility-opening applications.
What tools are compatible with these core drill bits?
The bits have a 5/8"-11 thread for compatible high-speed angle grinders. They can also be used with an appropriate core bit extension on compatible hammer drills and rotary hammers.
Can these diamond core bits drill faucet holes?
Yes. They are suitable for drilling 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 coring bits create clean, rounded corners when preparing square or rectangular sink openings.
Can these coring bits create plumbing and electrical openings?
Yes. The available diameter range supports compatible openings for water, gas, and electrical piping.
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.