General description IRWIN Blue Groove 6X Drill Bits are designed specifically for wood drilling, providing 6x faster drilling penetration compared to standard flat bits. Their innovative Tri-Flute design enhances chip ejection, while the full screw tips facilitate ease of use and pull-through. The cutting spurs ensure clean holes with minimal breakout, and the tapered flute design helps reduce binding. Additionally, these drill bits are heat treated for increased durability. Technical specifications Diameter: 25 mm Length: 165 mm