Best Core Drill Bits for Drilling Concrete (2026)
Selections were ranked by diameter options, diamond segment construction, tool compatibility, and overall value across common price tiers
The Verdict
- Best Overall: Diamond Core Drill Bits 1-1/4 in for hard stone and concrete — Best for angle-grinder setups: 32mm diamond core built for hard stone and concrete with compact diameter fit
- Best Value: Diamond Core Drill Bits 1-1/2 in for hard stone and concrete — Best mid-size option: 1-1/2" diamond core that balances cutting area and tool compatibility for common masonry tasks
Top Picks
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1
Best Overall Diamond Core Drill Bits 1-1/4 in for hard stone and concrete
Best for angle-grinder setups: 32mm diamond core built for hard stone and concrete with compact diameter fit
Laser welded diamond core bits for dry or wet drilling in hard stone, concrete, marble, and granite. Designed for angle grinders with 32mm diameter and 100mm length. One customer notes easy cutting and good value for money
- 32mm diameter diamond core bit
- laser welded construction
- versatile dry or wet drilling
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2
Best Value Diamond Core Drill Bits 1-1/2 in for hard stone and concrete
Best mid-size option: 1-1/2" diamond core that balances cutting area and tool compatibility for common masonry tasks
Diamond core drill bit for hard granite, marble, engineering stone, concrete and brick. Ideal for faucet mounting holes in stone countertops and plumbing lines in showers and vanities. Customers note smooth cuts and solid build with reliable speed
- hard stone and concrete compatibility
- diamond bit with fast performance
- versatile for plumbing and countertop work
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3
Diamond Core Drill Bits 1-3/8 in for hard stone
Best for intermediate holes: 1-3/8" diamond core offering a good compromise between reach and manageability on stone
Laser welded diamond core bits for dry or wet drilling on granite, marble, and concrete. Notable for easy handling and solid build; users report good speed and value, with mixed durability feedback
- dry or wet drilling capability
- 35mm diameter core bit
- fast cutting with diamond segments
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4
SHDIATOOL Diamond Core Drill Bits 45mm (1-3/4") for hard stone
Best for larger holes: 45mm diamond core designed for hard stone with a deeper cutting profile for bigger penetrations
Diamond core drill bits for dry or wet drilling on hard stone, granite, concrete and marble. 45mm diameter with 100mm length; dry drilling endorses longer segment life when used wet. Customers note easy cutting and good build quality, with some durability variability
- laser welded diamond segments
- 45mm diameter suitability for hard stone
- dry or wet drilling versatility