General description The IRWIN® Blue Groove 4X Flat Bit is engineered for efficiency, featuring a patented groove point and cutting edge that allows for cutting rather than scraping timber. This innovative design makes it four times faster than standard flat bits, ensuring a smoother and quicker drilling experience. Technical specifications Diameter: 28mm Length of shank: 152mm Increased relief angle: 17° (from 12°) Shank diameter: 10% larger than standard for added durability Usage The parabolic scoop design optimizes control and enhances the removal of wood chips, making it ideal for various woodworking applications.