Irwin masonry drill bits are the most effective and durable stone drill bits on the market. Thanks to the carbide tips, their lifespan and efficiency are guaranteed on all stone materials. The tip structure is shaped so that it cuts the material aggressively, ensuring 15% faster drilling speed compared to standard bits. Thanks to the unique soldering process, the connection between the tip, shank, and flute is extremely strong. Thanks to the single flute structure, the bit removes chips 60% more efficiently than comparable products. Carbide tipAggressively cutting tipUnique soldering processSingle flute structure