- High-speed steel cutting edge maintains its sharpness
- Pull through material with speed and ease with an aggressive parabolic screw tip
- Resharpenable blade allows extended blade life
- 3/8" quick change hex for convenient bit changes
- Black oxide coating for improved corrosion resistance
- Optimized flute geometry for fast and efficient chip ejection
![Irwin Speedbor Supreme Auger Bit 1" x 7-1/2" #IWAX3019 (1/Pkg.) Irwin Speedbor Supreme Auger Bit 1" x 7-1/2" #IWAX3019 (1/Pkg.)](https://cdn11.bigcommerce.com/s-gdy1ehz/images/stencil/500x659/products/312661/449153/7ac72aa5d4408222a817dbb58d4d2eb577d59e7e__56713.1669664315.jpg?c=2)