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Amazon.com: DEWALT Concrete Drill Bit, Carbide Core Bit Body, 2-1/2-Inch by 4-Inch (DW5902) : Everything Else
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DEWALT Black and Gold 11/32-in x 4-7/8-in Black and Gold Coated Hss Twist Drill Bit in the Twist Drill Bits department at Lowes.com
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