The irwin blue groove 4x flat bit 25 x 152mm features a patented groove point and cutting edge engineered to cut rather than scrape timber. Delivering performance four times faster than standard flat bits, this precision tool optimises drilling efficiency in demanding applications. The parabolic scoop design provides superior control while efficiently removing wood chips during operation. An increased relief angle from 12 to 17 improves cutting performance and reduces resistance throughout the drilling process. The 152mm shank features a 10% larger diameter construction for superior durability and extended service life under professional use. This precision-ground flat bit is optimised for carpenters, joiners and construction professionals requiring fast, clean drilling in timber. Features & benefits: patented groove point and cutting edge cuts timber cleanly without scraping. Delivers 4x faster drilling speed compared to standard flat bits. Parabolic scoop design optimises wood chip removal and operator control. Increased relief angle from 12 to 17 for improved cutting efficiency. 10% Larger diameter shank provides superior durability and longevity. Ideal for carpentry, joinery, construction and professional timber drilling applications. Dimensions: 25mm bit diameter x 152mm shank length.