" UNB " 4 IRWIN INDUSTRIAL TOOL COMPANY

3/16" - 7/8" 12-HOLE UNIBIT

HSS Step Drill Bit

Size: 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8"

Shank Size: 3/8"

Number of Hole Sizes: 12

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