The 40mm Diamond Core Bit is built for installers who need a substantial opening without sacrificing the finish of high-end materials. This large-diameter bit utilizes industrial diamond-bonded technology to grind through the toughest natural stone surfaces, ensuring that the structural integrity of the slab remains intact. It is particularly useful for commercial installations or custom residential projects where oversized plumbing lines or heavy-duty mounting systems must pass through thick granite or marble.
Because larger bits generate more heat and resistance, this model features a reinforced body designed for maximum stability and cooling efficiency. The precision-ground shank ensures a secure fit in professional rotary drills, reducing lateral movement and vibration that can lead to chipping. Whether you are drilling through stone tiles for a drainage junction or preparing a vanity for custom plumbing, this 40mm core bit provides the clean, perfectly circular results required for a premium installation.
Key Features
-
40mm Extra-Large Diameter: Specifically designed for oversized plumbing conduits, waste lines, and commercial hardware.
-
High-Density Diamond Edge: Features a premium diamond-bonded rim for an aggressive and clean cut through the hardest stone.
-
Industrial Stability: Engineered with a reinforced body to minimize vibration during high-torque drilling.
-
Clean-Exit Technology: Designed to reduce breakout on the underside of the stone for a professional finish.
-
Protective Storage Tube: Includes a dedicated plastic case to safeguard the large diamond surface from impacts.
Benefits
-
Accommodates Larger Fixtures: Provides the exact clearance needed for specialized taps and heavy-duty drainage components.
-
Ultimate Material Safety: The precise grinding action prevents the cracking and fracturing common with large impact-based bits.
-
Professional Grade Speed: Slices through dense granite and marble significantly faster than manual cutting methods.
-
Long-Term Reliability: Built to withstand the rigors of heavy trade use, ensuring consistent performance over multiple projects.
