- Single-flute cutting edge for greater control through steps
- Hex shank prevents slipping in drill chuck
- Also available with (TiN) coating for longer life
- New SpeedPoint tip penetrates faster than previous Unibits and prevents walking
- Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates
![Irwin Unibit® High Speed Steel Fractional Self-Starting, 1/4"-1 3/8", 10 Steps, #IR-10235 (1/Pkg) Irwin Unibit® High Speed Steel Fractional Self-Starting, 1/4"-1 3/8", 10 Steps, #IR-10235 (1/Pkg)](https://cdn11.bigcommerce.com/s-gdy1ehz/images/stencil/500x659/products/258708/363608/585-10220__72503.1595458972.jpg?c=2)