Core Drill Diamond Dry Coring Bit 4" with Pilot Bit for Hard Concrete

1. Premium Diamond Grit
The core bore drill is elaborate aluminum alloy, selected diamond teeth, and high-frequency welding technology, providing steady and rustproof.
2.5 /8"-11 Universal Thread
Our diamond core drill is suitable for most types of machines in the market. You can install the drill on your previous machine effortlessly.
3. Quick Chip Removal Hole
These core drill pilot bits are equipped with cooling chip removers for fast chip removal, aiming to operate directly on the wall and reduce noise
4. Flawless Kit
Our handheld core drill comes with a core bore drill, a pilot bit, and a hot-pressed corrugated saw blade, well-designed to furnish you with maximum convenience
5. High-frequency Teeth Welding
High-frequency welding has firm, sharp, and wear-resisting properties, the heat evenly technique without missing welding.
6. The core drill reducer is paramount to your projects, widespread used in installing air conditioning, range hood, sewer, and engineering coring.