Bullet Blue Diamond Core Bit — 19mm | For Granite, Marble & Hard Stone
The Bullet Blue 19mm Granite Core Bit is engineered for precision hole drilling in the toughest stone and masonry materials. Fitted with a diamond cutting segment, this core bit delivers clean, accurate 19mm holes in granite, marble, tiles, and other hard surfaces — with superior speed and durability.
Key Features:
19mm core diameter for standard pipe, cable, and fixture installations
Diamond-tipped cutting edge for maximum hardness and durability
Designed for wet or dry drilling depending on application
Precise hole sizing — no chipping or cracking on stone surfaces
Compatible with standard angle grinders and core drilling machines
Ideal For: Drilling through granite countertops, marble slabs, stone flooring, ceramic and vitrified tiles, and hard masonry in construction and renovation projects.