- Constructed of M-2 high speed steel for the best combination of strength, heat resistance and wear resistance
- For use in wood, metal and plastic
- The 135 degree split point ensures a true start and eliminates bit walking
![Irwin Heavy Duty Black Oxide HSS Jobber Length Drill Bit, 21/64", Bulk, #63521ZR (6/Pkg) Irwin Heavy Duty Black Oxide HSS Jobber Length Drill Bit, 21/64", Bulk, #63521ZR (6/Pkg)](https://cdn11.bigcommerce.com/s-gdy1ehz/images/stencil/500x659/products/258950/456893/Untitled_design_-_2023-02-13T141141.461__26274.1676385442.jpg?c=2)
IRWIN Tools
Irwin Heavy Duty Black Oxide HSS Jobber Length Drill Bit, 21/64", Bulk, #63521ZR (6/P…
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