*UNTESTED* 2-Inch Diamond Core Drill Bit – Heavy Duty Diamond Hole Saw for Tile, Concrete, Granite & Stone – Laser Welded Core Drill Bit for Wet/Dry Use – Premium Tile Hole Saw for Marble & Brick

Additional Details from the Manufacturer

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• HEAVY DUTY DRILL BIT - Cresthome heavy duty concrete drill bit is designed for hard stone stuff and offers fast drilling and smooth performance with less chipping to improve the working efficiency and no broken edges. Vacuum brazed side protection provides accurate cut and steel core protection.
• PREMIUM MATERIAL - The diamond drill bit is designed with premium quality, durable, and long-lasting diamond and strong steel body with laser welded technology to avoid segments off and provide stable drilling. Perfect for heavy duty use for dry or wet drilling.
• FAST & SMOOTH DRILLING - This hole saw drill bit offers fast and smooth drilling with no broken edges. You need to add sufficient water to help cooling the bits which could extend the work efficiency in case you drill through thick granite. Angle grinder or handheld core drill is recommended for better performance.
• WIDE APPLICATION - Our heavy-duty diamond core drill bit is perfect for drilling marble, hard granite, concrete, engineering stone, bricks, porcelain tile, stone, and Mansory. Ideal for dry drilling holes, smoother core, easier bit removal and drilling the faucet mounting holes in stone countertops, plumbing lines in showers, etc.
• SIZE - This stone drill bit has ideal size and fits your standard drill. It comes with 3 inches diameter and 2 different lengths; 2 inches and 6.92 inches with standard 3/8-inch shank for standard cordless drill or electric drill. Ideal for precise and clean cut with brilliant speed on different kind of stuff.