Irwin Hanson 11103 Unibit Step Drill Bit 6mm to 18mm 7-Step

The Irwin Hanson 11103 Unibit is a precision step drill bit designed for drilling multiple hole sizes with a single bit. This metric version drills 7 different hole sizes ranging from 6mm to 18mm, making it an efficient solution for professionals and DIYers who need versatility without carrying multiple drill bits.

Key Features:

• Single flute cutting edge provides greater control and smoother progression through each step
• SpeedPoint tip design penetrates material faster and prevents bit walking for accurate hole placement
• Three-flatted shank prevents slipping in the drill chuck for secure, reliable operation
• Ideal for thin materials including stainless steel, copper, brass, aluminum, plastic, and laminates
• Drills 7 hole sizes: 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, and 18mm

This step drill bit is perfect for electrical work, HVAC applications, metal fabrication, and any project requiring clean, burr-free holes in sheet materials. The stepped design automatically deburrs holes as it drills, eliminating the need for secondary finishing operations.