This IRWIN Unibit Cobalt Step Drill Bit Set is engineered with M-35-grade cobalt steel for maximum life when drilling in tough steel. The SpeedPoint tip design provides fast starts and features laser-marked sizes for easy re...

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This IRWIN Unibit Cobalt Step Drill Bit Set is engineered with M-35-grade cobalt steel for maximum life when drilling in tough steel. The SpeedPoint tip design provides fast starts and features laser-marked sizes for easy reading. The radial concave flute design helps ensure an effective use of drilling power.

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