Premium Cobalt Step Drill Bit


Premium Cobalt Step Drill Bits for drilling hard material.

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Premium Cobalt Straight Flute Step Drills for hardened materials. USA

Premium Cobalt step drill bits sometimes known as a cone drill are best known for their excellent performance in drilling hard materials such as stainless steel, high carbon steel, cast iron, and other metals.

These bits also have a superior heat resistance making them stay much sharper for much longer.

These Step Drill bits come on a Hex, quick release shank for maximum control and speed.

Great for quick, large hole-making on hard material!


M42 Cobalt 1/4″, 7/8″ & 1-1/8″ Step Drill (3 steps) 3-flat shank DR-SD-CSB-338
M42 Cobalt 3/16″ to 7/8″ Step Drill (12 steps)  -Hex shank DR-SD-CSB1238
M42 Cobalt 1/8″ to 1/2″ Step Drill (13 steps)    -Hex shank DR-SD-CSB1314
M42 Cobalt 9/16″ to 1″ Step Drill (8 steps)  –     Hex shank DR-SD-CSB838
M42 Cobalt 1/4″ to 3/4″ Step Drill (9 steps)  –   Hex shank DR-SD-CSB938
M42 Cobalt 7/8″ hole for 1/2″ conduit  –              Hex shank DR-SD-CSB1138
M42 Cobalt 3/16″ to 1/2″ Step Drill (6 steps)  –  Hex shank DR-SD-CSB614
M42 Cobalt 7/8″ to 1-3/8″ Step Drill (5 steps)   –    3-flat shank DR-SD-CSB1012
Weight .02 lbs
Cobalt Step Drill Size:

M42 Cobalt 1/4", 7/8" & 1-1/8" Step Drill (3 steps), M42 Cobalt 3/16" to 7/8" Step Drill (12 steps), M42 Cobalt 1/8" to 1/2" Step Drill (13 steps), M42 Cobalt 9/16" to 1" Step Drill (8 steps), M42 Cobalt 1/4" to 3/4" Step Drill (9 steps), M42 Cobalt 7/8" hole for 1/2" conduit, M42 Cobalt 3/16" to 1/2" Step Drill (6 steps), M42 Cobalt 7/8" to 1-3/8" Step Drill (5 steps)

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