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DEWALT 1/4-in 4-1/16-in Cobalt Alloy Steel Jobber Length Twist Drill Bit in the Twist Drill Bits department at Lowes.com
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Drill Bit Drilling for Hard Metal, Stainless Steel, Besi,Kayu,Aluminium and Other Hard Materials (高速金属钻)Mata Tebuk High Speed
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Amazon.com: BOSCH CO2143 1-Piece 1/4 In. x 4 In. Cobalt Metal Drill Bit for Drilling Applications in Light-Gauge Metal, High-Carbon Steel, Aluminum and Ally Steel, Cast Iron, Stainless Steel, Titanium : Industrial
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