2 1/2" x 12" x 1/2" Hollow Core Masonry Carbide Tipped Drill Bit MADE IN USA

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2 1/2" x 12" x 1/2" Hollow Core Masonry Carbide Tipped Drill Bit MADE IN USA Wave design transfers energy to bit more effectively for up to 40 percent faster drilling versus previous design Carbide-tipped centering bit Asymmetrical carbide teeth for faster cutting, longer life All-in-one core transmits power directly to the end of the bit