" UNB " 3 IRWIN INDUSTRIAL TOOL COMPANY

1/4" - 3/4" 9-HOLE UNIBIT

HSS Step Drill Bit

Size: 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4"

Shank Size: 3/8"

Number of Hole Sizes: 9

Step Thickness: 1/16"

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STEPBIT, STEP-BIT, STEP BIT, UNIBIT, UNI-BIT, MULTISTEP, MULTI-STEP, MULTI STEP, MULTIHOLE, MULTI-HOLE, MULTI HOLE