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DEWALT DW2571 Rotary Drill Bit Set, 3-Piece, Carbide
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Carbide tipped for applications such as drilling in brick, block and concrete, rapid load quick change; universal 1/4 in hex shank prevents slipping. Includes one 5/32 in, 3/16 in and 1/4 in bits.
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Irwin 1881078 Impact Drill Bit Set, 5-Piece, Carbide, Black Oxide
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Innovative pressed carbide tip with aggressive cutting angles for faster drilling and longer bit life. One-piece construction withstands higher torque loads than standard quick-change bits. Black oxide finish resists corrosion and increases life of bit. 1/4 in quick-change shank is designed to work with impact drivers and reduces slipping in standard drill chucks.
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