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Amazon.com: HIGHEMN Cutting Drill Bits 1PC 8mm-20mm M35 HSS-CO Cobalt Drill Bits HSS Twist Drill Bit for Stainless Steel (8/9/10/11/12/13/14/15/16/17/18/19/20mm) (Size : 11mm) : Tools & Home Improvement
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IRWIN Multi-material 3/8-in x 5-1/2-in Carbide Masonry Drill Bit for Rotary Drill in the Masonry Drill Bits department at Lowes.com
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