At a Glance
Shank Type
Round
Hole Size Range
13/16 in - 1-3/8 in
Number Of Steps
10
Material
High Speed Steel
Sold As
Individual
Color
Black
Finish
Polished
Description
Description
Irwin 10221 Description
Unibit step drills from Irwin are the industry standard. Their single flute design results in a much more accurate hole than double flute bits. The SpeedPoint™ gets the hole started fast! Ideal for drilling holes in thin materials such as mild steel, copper, brass, aluminum, plexiglass, wood and laminates. Models designated with a "T" offer a TiN (Titanium Nitride) coating which hold their cutting edge up to six times longer!
Irwin 10221 Includes
- (1) High Speed Steel Fractional Unibit 21, 13/16"-1 3/8"
Irwin 10221 Features
- Single-flute cutting edge for greater control through steps
- 3 flatted shank prevents slipping in drill chuck
- Also available with titanium nitride coating for longer life
- Patented single-flute cutting edge gives the user a true round hole every time
- Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates
- Pilot hole required
- Practical, efficient tools to get your job done right
- Made to ensure maximum longevity and high wear resistance
- Ultimate in reliability, convenience, and ease of use
Irwin 10221 Specifications
| Hole Sizes | 13/16" - 1-3/8" |
| Flutes | 1 |
| Hole Sizes (inches) | Hole Enlarging |
| Shank Size | 1/2" |
| Construction | High Speed Steel |
| Number of Holes | 10 |
| Maximum Material Thickness | 1/8" |
Toolup Part # :
139571
WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer and birth defects or other reproductive harm. www.p65warnings.ca.gov
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