General description This Irwin Blue Groove 4X Flat Bit is expertly designed for precise drilling into various types of wood, including plywood, hardwood, softwood, and chipboard. It features a patented groove point and cutting edge that efficiently cut through materials, resulting in faster and cleaner holes. The parabolic scoop design enhances control and effectively removes wood chips, while the increased relief angle ensures smoother operation. With a durable, thick cutting edge, this bit promises a longer lifespan and reliability. Its hexagonal shank prevents slipping in the drill chuck, providing a secure grip during use. Technical specifications Diameter: 38 mm Overall length: 152 mm Drilling depth: approximately 110 mm Shank diameter: 1/4 inch (6.35 mm) Shank shape: Hexagon Number of spurs: 2 Material: High durability steel Compatibility and accessories Compatible with standard drills with 1/4 inch hex chuck Suitable for use with wood, plywood, hardwood, softwood, and chipboard