Irwin 4X Blue Groove Flat Wood Drill Bit

The 10mm IRWIN® Blue Groove 4X Flat Bit is an essential size for countless trade applications, from installing cable runs and pipework to general joinery and furniture construction. This popular diameter delivers excellent performance across a broad spectrum of drilling tasks in timber. Featuring IRWIN's patented groove point and cutting edge, this 10mm bit cuts through timber with precision rather than scraping, ensuring clean, accurate holes every time. The advanced design achieves speeds up to 4 times faster than standard flat bits, significantly boosting productivity on site. The parabolic scoop efficiently removes wood chips whilst maintaining superior control throughout the drilling process. With an increased relief angle of 17° for enhanced cutting efficiency and a robust 152mm shank manufactured 10% larger in diameter, this bit is engineered for professional durability. The strengthened construction resists bending and wear, maintaining consistent performance even under intensive use.