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

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 use
• Speedpoint tip for fast starting
• 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