- Drill bit is engineered with M-35-grade Cobalt Alloy Steel for maximum life when drilling in tough steel
- Drill bits feature a radial concave flute
- IRWIN drill bits have laser-marked sizes for simple identification
- Drills 13 hole sizes from 1/8 inch to 1/2 inch in 1/32-inch increments

IRWIN Tools
Irwin® Cobalt Step Drills, 7/8"-1 1/8", 2 Steps, #IR-10239CB (1/Pkg)
$103.77
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