Irwin Wood Auger Drill Bit

The Irwin IRW10502749 is a long series 12mm diameter auger drill bit with an extended 400mm overall length, specifically engineered for deep boring applications requiring larger diameter holes. This specialist bit is essential for structural work, deep post holes, services installation through thick beams, and construction applications where both substantial hole size and extended reach are critical. Designed for all general wood boring, this long auger bit offers superior performance in the most demanding scenarios. The single spur cutting edge scribes the circumference of the hole for a smoother quality finish throughout the entire depth, whilst the hexagon shank prevents slipping in drill chucks or bit extensions during prolonged, heavy-duty drilling operations. The solid centre provides extra rigidity whilst boring, absolutely essential for maintaining accuracy when drilling large diameter holes at depth. The self-feeding screw point provides faster boring in both soft and hard woods whilst keeping the bit on track, and the fully hardened body from tip to shank provides extra durability under the substantial forces encountered during deep, large-diameter work.