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Lichamp 3/8" HSS Cobalt Drill Bits 5PCS with Three Flute for Hard Metal, Hardened Stainless Steel and Cast Iron - Amazon.com
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Milwaukee 5/8 in. x 8 in. 4-Cutter SDS-PLUS Carbide Drill Bit (5-Pack) 48-20-8300-5X - The Home Depot
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Amazon.com: Owl Tools SDS Max Masonry Drill Bit Set (Carbide Tipped - 5 Piece Set) 13" Length in The Following Sizes: 1/2", 5/8", 3/4", 7/8", and 1" : Tools & Home Improvement
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