Irwin® 10231 High Speed Steel Fractional Self-Starting, 1/8 In To 1/2 In, 13 Steps

The Irwin 10231 High Speed Steel Fractional Self-Starting Step Drill Bit is engineered to provide precise, clean holes in a variety of thin materials. This versatile tool eliminates the need for center punching by utilizing a self-starting tip that stays on target during initial contact.

• Thirteen distinct steps allow for multiple hole sizes ranging from 1/8 inch to 1/2 inch with a single bit, increasing efficiency on the jobsite.
• High-speed steel construction ensures long-lasting durability and maintains a sharp cutting edge through repeated use in metal and plastic.
• The self-starting design prevents bit walking, improving accuracy and reducing the risk of workpiece damage.

This step drill bit is ideal for electrical contractors, HVAC technicians, and maintenance professionals who frequently work with sheet metal, ductwork, or electrical panels.

• Size Range: 1/8 In to 1/2 In
• Number of Steps: 13
• Material: High Speed Steel

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