Irwin - 8 Hole Sizes, 9/16 to 1" Hole Diam Cobalt Step Drill Bit
Item #: 55267314
Brand: Irwin
Model #: 10220CB
Features and Benefits
Cobalt is harder than high speed steel and provides better wear resistance. It is commonly used on high tensile alloys.
Bright provides a smooth, polished finish on the tool. It increases chip flow in softer materials such as aluminum, wood and plastic.
Hex shanks are used higher speed machining operations due to its angled shape. They are constructed of six sides and fit into a quick change chuck. They are commmonly made of a 1/4" shank.
| Product Specifications | |
|---|---|
| Minimum Hole Diameter (Inch) | 9/16 |
| Maximum Hole Diameter (Inch) | 1 |
| Drill Bit Material | Cobalt |
| Drill Bit Finish/Coating | Bright |
| Number of Hole Sizes | 8 |
| Shank Type | Hex |
| Shank Diameter (Inch) | 7/16 |
| Step Increments (Inch) | 1/16 |
| Step Increments (mm) | 1.5875 |
| Overall Length (Inch) | 3-1/2 |
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