Irwin Unibit Fractional Step Drill Bit - #9 7/16-in - Hex Shank - 2 Hole Sizes - Speed Point - Each

Use the Irwin Unibit step drill bit to drill 7/8 in to 1 1/8 in dia holes. Its 7/16 in L hexagonal shank prevents slipping of the drill chuck. The high speed steel step drill bit has high tensile strength.

Laser marked sizes won't wear off with useSpeedpoint tip for fast starting2 hole sizesHigh speed steel fractionalSingle-fluted cutting edge for greater control and rounder holesIdeal for drilling holes in thin materials such as mild steel, copper, brass, aluminum, plexiglass, wood and laminates3-flatted shank won't slip in chuck
Specifications - Diameters of Holes Drilled
7/8-in to 1-1/8-in
Material
High-speed steel
Number of Hole Sizes
2
Set/Individual
Individual
Shank Size
7/16-in
Shank Type
Hex