IRWIN Cobalt Step Drills, 1/4 in-3/4 in, 9 Steps (585-10233CB)
$78.49
6X longer life3-Flatted shankSpeedpoint? tipLaser marked sizes Cutting Diameter = 1/4 in [Min], 3/4 in [Max] Cutting Edge Material = M35 Cobalt HSS Material Thickness = 1/16 in [Max] Measurement Type = Fractional No. of Steps = 9