" UNB " 2 IRWIN INDUSTRIAL TOOL COMPANY

3/16" - 1/2" 6-HOLE UNIBIT

HSS Step Drill Bit

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

Shank Size: 1/4"

Number of Hole Sizes: 6

Step Thickness: 1/16"