- Patented micro-groove cutting edge and spurs produce a smoother hole finish
- Double spur design scribes the hole before the chips are made, producing a cleaner hole and reducing vibration
- All bits have a 1/4" hex shank that fit all drills and 1/4" quick change adapters
![Irwin Speedbor® Standard Length Flat Bit, 1", #IR-88816 (6/Pkg) Irwin Speedbor® Standard Length Flat Bit, 1", #IR-88816 (6/Pkg)](https://cdn11.bigcommerce.com/s-gdy1ehz/images/stencil/500x659/products/258624/459507/Untitled_design_-_2023-03-01T134528.195__37333.1677699937.jpg?c=2)