Irwin 4X Blue Groove Flat Wood Drill Bit

The 8mm IRWIN® Blue Groove 4X Flat Bit is a versatile size perfect for general carpentry, door hardware installation, and electrical fitting work. This diameter strikes an excellent balance between precision and capability, making it one of the most frequently used sizes in any tradesperson's toolkit. The patented groove point and cutting edge technology ensures this 8mm bit cuts cleanly through timber without scraping, producing smooth, professional-quality holes with minimal splintering. Operating up to 4 times faster than conventional flat bits, it dramatically improves efficiency when drilling multiple holes. The parabolic scoop design maintains excellent control whilst effectively clearing wood chips from the cutting area. Built with an increased 17° relief angle for superior cutting performance and featuring a 152mm shank that's 10% larger in diameter, this bit offers exceptional durability for demanding daily use. The robust construction resists bending and maintains accuracy even under sustained professional applications.