Irwin 4X Blue Groove Flat Wood Drill Bit

The 12mm IRWIN® Blue Groove 4X Flat Bit is an extremely versatile size ideal for plumbing installations, electrical conduit work, and medium-duty carpentry applications. This diameter is particularly popular for creating clearance holes for standard fixings and fittings in timber constructions. The patented groove point and cutting edge design ensures this 12mm bit cuts cleanly and efficiently through timber without scraping, producing professional-quality results with minimal effort. Operating up to 4 times faster than conventional flat bits, it delivers substantial time savings on projects requiring multiple holes. The parabolic scoop maintains excellent control whilst effectively clearing debris from the cutting path. Engineered with an increased 17° relief angle for superior cutting performance and featuring a 152mm shank that's 10% larger in diameter than standard bits, this tool offers exceptional durability. The robust construction withstands the demands of regular professional use whilst maintaining precision and accuracy.