Irwin 4X Blue Groove Flat Wood Drill Bit

The 35mm IRWIN® Blue Groove 4X Flat Bit is a heavy-duty size designed for major construction applications in timber, ideal for large waste pipe installations, substantial electrical conduit work, and significant structural drilling tasks. This diameter provides exceptional capability for the most demanding professional applications. Featuring IRWIN's patented groove point and cutting edge, this 35mm bit cuts through timber with precision and efficiency rather than scraping, ensuring clean, accurate holes even at this substantial diameter. The advanced design achieves speeds up to 4 times faster than standard flat bits, delivering remarkable time savings on larger diameter drilling operations. The parabolic scoop provides excellent chip removal and superior control, essential when working with this more substantial size. With an increased relief angle of 17° for enhanced cutting performance and a robust 152mm shank manufactured 10% larger in diameter, this bit is engineered for professional durability. The strengthened construction maintains accuracy and resists bending under intensive use, making it suitable for the most demanding trade applications.