Best Core Drill Bits for Drilling Granite (2026)
We evaluated bits by cutting method (diamond vs. vacuum-brazed), diameter range, wet/dry rating, welding/bond integrity, and aggregated user ratings to rank fit and value for granite drilling
Top Picks
-
1
Diamond Core Drill Bits 1-1/4 in for hard stone and concrete
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
-
2
Diamond Core Drill Bits 1-1/2 in for hard stone and concrete
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
-
3
Diamond Core Drill Bits 1-3/8 in for hard 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
-
4
SHDIATOOL Diamond Core Drill Bits 45mm (1-3/4") for hard stone
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
-
5
Diamond Hole Saw 2-1/2" Core Drill Bit for Tile Granite Marble Ceramic Glass
Diamond core drill bit with vacuum brazed diamond coating for long life, suitable for dry and wet drilling. Designed for cutting holes in hard materials like granite, marble, ceramic, and glass. Customer insight: easy to use with positive quality and durability, though there may be slight chipping
- 65mm diamond core bit
- vacuum brazed diamond coating
- 2-1/2" cutting capacity