Bosch 1" x 31" x 36" SDS-Max SpeedXtreme Rotary Hammer Drill Bit exceptional durability and performance for drilling in reinforced concrete and hard aggregate. Featuring carbide heads with a four-cutter design, these bits provide five times the lifespan d to competitors. Engineered with proprietary diffusion-bonding technology, the carbide and steel are bonded at a molecular level through a precise high-heat, high-pressure solid-state welding process, ensuring jobsite-proven reliability. Bosch stands alone as the only concrete bit manufacturer that produces its own carbide and conducts a quality check on every single bit. The bit’s four-cutter design delivers a 180° cutting diameter with power transfer during drilling, while the active-centering tip creates rounder holes. Additionally, the four 90° side angles form a wide and sharp head for precise hole driving. The innovative four-flute design efficiently pulls dust away from the work area, enabling faster drilling and extending bit life. Model Number: 1 607 017 078