The Diamondhead USA Dry Core bit - Segmented dry/wet-

The Diamondhead USA Dry Core bit - Segmented dry/wet with vacuum brazing side protection is the best tool to drill a hole into granite or other hard stones. The vacuum brazing on the side protects the side of the core bit from wear while aiding in the coring process. These bits have 5/8-11 thread and are available in 1", 1 1/4", 1 3/8", 1 1/2", 1/5/8", 1 3/4", 2", 2 1/2",3" In a case of 10.