High Performance Core Bit for Natural and Engineered Stones

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2.4" long high performance core bits designed for for very fast drilling speed even in hard stone materials (up to 8 on Moh's hardness). Capable to easily create mounting holes in granite, quartz, sandstone, quartzite, and concrete countertops. Vacuum-brazed side protection creates a smoother core and easier bit removal. 1/2" shank adapter for chuck drills is sold separately below. Segment Height: 8 mm Drilling Depth: 2.4" Arbor 5/8"–11 threaded / 1/2" Shank Drilling Method: Wet and dry Show more