The Irwin IRW10502749 Auger bit - long series has the following dimensions: Drillbit diameter: 12.0mm, Total length: 400mm, Working Length: 323mm. The Irwin long auger wood drill bits have been designed for all general wood boring and offer superior performance. The single spur cutting edge scribes the circumference of the hole for a smoother quality finish. The hexagon shank prevents slipping in a drill chuck or bit extension. The solid centre provides extra rigidity whilst boring, the self-feeding screw point provides faster boring in both soft and hard woods and the fully hardened body from tip to shank provides extra durability. This high-quality, long-series bit is ideal for demanding woodworking projects. Its robust design ensures clean, accurate holes every time. Perfect for larger-scale applications requiring significant depth. Features: Long series design for deep drilling applications. High-quality construction for durability and precision. Designed for clean, accurate holes in wood. Specifications: Brand: IRWIN®, MPN: 10502749, EAN: 5709131134015.