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

Description

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. 2 hole sizes High speed steel fractional Single-fluted cutting edge for greater control and rounder holes Ideal for drilling holes in thin materials such as mild steel, copper, brass, aluminum, plexiglass, wood and laminates 3-flatted shank won't slip in chuck Speedpoint tip for fast starting Laser marked sizes won't wear off with use