Irwin 11103CB IRWIN Unibit Cobalt Step Drill Bit, Metric, No.3 (11103CB)

11103CB Unibit® Cobalt High Speed Steel Metric No.3M Step Drill - 7 Steps. Standard Features: 6X Longer life vs. the competition. Engineered with M35 Cobalt steel for maximum life when drilling in tough stee. Speedpoint™ tip. Radial concave flute. SpeedPoint® tip for fast starts. Laser marked sizes. Description: No.3M. Hole Sizes: 6 mm - 18 mm (2 mm Increments). No. of Holes: 7 Steps. Hex Shank Size: 3/8".