Irwin 10220 Unibit Fractional Hole Enlarging Step Drill Bit #20

"IRWIN" ENLARGING STEP DRILL BIT

• Drills 9/16" to 1" holes in 1/16" increments.
• Has 8 steps on bit.
• High speed steel bit.
• Single flute cutting edge for greater control through steps.
• Cutting edge provides a true round hole.
• Three flatted shank (1/2")prevents slipping in drill chuck.
• Ideal for drilling holes into thin materials such asstainless steel, copper,brass, aluminum, plastic and laminates.
• Pilot hole required.
• Carded.

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