The irwin blue groove 4x flat bit delivers precision wood boring performance through patented groove point technology engineered to cut rather than scrape timber. The 13 x 152mm configuration provides reliable drilling capacity for joinery and construction applications. The parabolic scoop design optimises chip removal and maintains drilling control throughout operation. The cutting edge incorporates an increased relief angle of 17 , advancing from the standard 12 , ensuring cleaner penetration and reduced friction during use. The shank features 10% larger diameter construction compared to conventional flat bits, delivering enhanced durability and resistance to flex under load. This robust design supports consistent performance across demanding timber drilling tasks. Features & benefits: patented groove point and cutting edge cuts timber rather than scraping for cleaner holes. 4 Times faster drilling performance than standard flat bits. Parabolic scoop optimises control and efficient wood chip removal. Increased relief angle from 12 to 17 for improved cutting efficiency. 10% Larger diameter shank for enhanced durability and reduced flex. Ideal for joinery, carpentry, construction and timber drilling applications. Dimensions: 13 x 152mm.