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29-Piece Cobalt Drill Bit Set ATD-9261

29-Piece Cobalt Drill Bit Set. Cobalt steel extends cutting edge life. Cobalt offers the best heat resistance for drilling in extremely hard and abrasive materials...

115 Pc Cobalt Drill Bit Set

115 Pc Cobalt Drill Bit Set. Each of these 115 cobalt drill bits comes organized in a metal indexed storage case for easy transport to...