Bosch 5/8" x 31" x 36" SDS-Max SpeedXtreme Rotary Hammer Drill Bit is engineered to deliver exceptional performance and durability for drilling in reinforced concrete and hard aggregate. Featuring carbide heads with a four-cutter design, these bits are among the toughest and longest-lasting on the market, ing five times the life d to competitors. Bosch utilizes proprietary diffusion-bonding technology, a precise high-heat, high-pressure solid-state welding process that bonds carbide and steel at a molecular level, ensuring reliable jobsite performance. Unique to Bosch, the carbide is manufactured in-house and each bit undergoes a quality check. The bit’s four-cutter design provides a 180° cutting diameter and ensures power transfer during drilling. Its active-centering tip produces rounder holes, while the four 90° side angles create a wide and sharp head for precise hole driving. Additionally, the four-flute design efficiently removes dust from the work area, enabling faster drilling and extending bit life. Model Number: Bosch 5/8" x 31" x 36" SDS-Max SpeedXtreme Rotary Hammer Drill Bit