General description This Irwin Blue Groove Wood Power Bit Set includes three durable and precise drill bits (20mm, 22mm, and 25mm) designed for high-speed drilling into wood, including nail-embedded wood. The bits feature a bi-metal construction that combines high-speed steel and carbon steel, providing enhanced strength, flexibility, and nail-cutting ability. With a self-feeding tip and three cutting edges, these bits ensure efficient chip removal and fast, clean holes. Technical specifications Sizes available: 20mm, 22mm, 25mm Material: Bi-metal (high-speed steel and carbon steel) Bit Type: Auger Bit Set Centre Type: Hollow Cutting Diameter: 20mm, 22mm, 25mm Drilling Depth: 100mm Overall Length: 152mm Shank Diameter: 3mm Shank Shape: Hexagon Number of Pieces: 3 Number of Spurs: 2 Design: Tri-Flute for faster chip ejection Compatibility and accessories Compatible with standard power drills and drill drivers Suitable for woodworking and carpentry projects involving nail-embedded wood