Irwin® Unibit® Cobalt step drill set with a cobalt steel construction provides high life of cutting edge for tough applications like drilling sold as 3 piece per pack.
Irwin® Unibit® Cobalt step drill set with a cutter of minimum 1/8" Dia, maximum of 3/4" Dia is ideal for drilling on hard materials. Step drill has 3 flatted shank that prevents slipping in drill chuck and intends to eliminate skidding.
Cutter diameter: 1/8" [min], 3/4"[max]
Cutting edge material : M35 cobalt HSS
Single-flute cutting edge for greater control through steps, laser marked sizes, Speedpoint™ tip
3 flatted shank prevents slipping in drill chuck, 6X longer life
Non-skid self-starting tip eliminates skidding and the need for center punching
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