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Bosch 1/2 in. x 8 in. x 13 in. Spline Speed-X Carbide Rotary Hammer Bit for Concrete and Masonry Drilling HC4511 - The Home Depot
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DeWALT - 3/8″ Diam, Spline Shank, Carbide-Tipped Rotary & Hammer Drill Bit - 06976427 - MSC Industrial Supply
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