Irwin Wood Auger Drill Bit

The Irwin IRW10502762 is a long series 18mm diameter auger drill bit with an extended 400mm overall length, specifically engineered for deep boring applications requiring this major hole diameter. This specialist bit is essential for deep structural timber work, major services installation through thick beams, heavy post preparation, and construction applications where both large diameter and extended reach are critical. Designed for all general wood boring, this long auger bit offers superior performance under the most demanding structural conditions. The single spur cutting edge scribes the circumference of the hole for a smoother quality finish throughout the full bore depth, whilst the hexagon shank prevents slipping in drill chucks or bit extensions during extended, heavy-duty structural drilling operations. The solid centre provides extra rigidity whilst boring, absolutely critical for maintaining straightness when drilling large diameter holes at considerable depth through structural timbers. The self-feeding screw point provides faster boring in both soft and hard woods whilst maintaining tracking accuracy, and the fully hardened body from tip to shank provides extra durability under the substantial forces generated during deep, large-diameter structural boring.