General description The Irwin IRW10502779 Auger bit - long series is designed for general wood boring, providing superior performance. Its solid center enhances rigidity while boring, and the self-feeding screw point allows for faster drilling in both soft and hard woods. The fully hardened body from tip to shank ensures extra durability. Technical specifications Drillbit diameter: 28.0mm Total length: 400mm Working length: 323mm Other information