- 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
- Shorter bit length gets into confined spaces (between studs) where standard lengths will not fit
- All bits have a 1/4" hex shank that fit all drills and 1/4" quick change adapters
![Irwin Speedbor® Flat Bit, 5/8", #IR-88810 (6/Pkg) Irwin Speedbor® Flat Bit, 5/8", #IR-88810 (6/Pkg)](https://cdn11.bigcommerce.com/s-gdy1ehz/images/stencil/500x659/products/257764/443541/88809__31504.1666291321.jpg?c=2)