FORET A BETON SDS MAX 1-1/4 X 10 DEWALT DW5824The DEWALT 1 1 4 inch x 10 inch x 15 inch 4 Cutter SDS Max Rotary Hammer Drill Bit (DW5824) is designed for use with rotary hammer drills. It has a hardened core that resists breaking, rock hard carbide cutter head, and a helix four flute design that quickly removes dust and debris. Use this commercial grade bit to bore through rock, concrete, and other masonry materials. The four cutter head increases life, durability and improves material removal.