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Irwin 10239, Unibit Step Drill #9, Fractional Self-Starting (HSS)
- Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates
- Single-flute cutting edge for greater control through steps
- Patented single-flute cutting edge gives the user a true round hole every time
- 3 faltted shank prevents slipping in drill chuck
- New speedpoint tip penetrates faster than previous unibits and prevents walking
Product Information
Product Information
Shipping & Returns
Shipping & Returns

Irwin 10239, Unibit Step Drill #9, Fractional Self-Starting (HSS)
Irwin 10239, Unibit Step Drill #9, Fractional Self-Starting (HSS)
- Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates
- Single-flute cutting edge for greater control through steps
- Patented single-flute cutting edge gives the user a true round hole every time
- 3 faltted shank prevents slipping in drill chuck
- New speedpoint tip penetrates faster than previous unibits and prevents walking
$22.26
Original: $63.59
-65%Irwin 10239, Unibit Step Drill #9, Fractional Self-Starting (HSS)—
$63.59
$22.26Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
- Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates
- Single-flute cutting edge for greater control through steps
- Patented single-flute cutting edge gives the user a true round hole every time
- 3 faltted shank prevents slipping in drill chuck
- New speedpoint tip penetrates faster than previous unibits and prevents walking

















