Irwin Hanson 10220 Unibit Step Drill Bit 9/16" to 1" High Speed Steel

The Irwin Hanson 10220 Unibit Step Drill Bit is a high-speed steel fractional hole enlarging bit designed for precision drilling in thin materials. This step bit drills holes from 9/16" to 1" in 1/8" increments, providing eight hole size options in a single bit.

Key Features:

• Patented single-flute cutting edge delivers true round holes with superior accuracy
• Single-flute design provides greater control as you step through each size
• Three-flatted 1/2" shank prevents slipping in drill chuck for secure operation
• High-speed steel construction for durability and long tool life
• Ideal for stainless steel, copper, brass, aluminum, plastic, and laminates

This Unibit is perfect for electricians, HVAC technicians, and metalworkers who need to drill multiple hole sizes in sheet metal, electrical panels, and other thin materials. The step design eliminates the need to carry multiple drill bits and prevents walking or wandering during initial contact.