General description The IRWIN® Speedhammer Plus Drill Bit is engineered for high-performance SDS drilling, making it ideal for a variety of tough materials including brick, block, masonry, concrete, and granite. Its innovative design features a patented single flute that enhances dust removal and reduces vibrations, resulting in faster and more efficient drilling. Technical specifications Diameter: 7.0mm Total length: 400mm Working length: 350mm Material: Tungsten carbide Usage Designed for drilling into brick, block, masonry, concrete, and granite. Utilizes aggressive cutting angles for faster drilling. Self-centering feature for improved accuracy.