Bosch 3/4" x 31" x 36" SDS-Max SpeedXtreme Rotary Hammer Drill Bit is engineered to deliver durability and performance for drilling in reinforced concrete and hard aggregate. Featuring carbide heads with a four-cutter design, these bits exceptional toughness and longevity, lasting up to five times longer than competing products. The proprietary diffusion-bonding technology bonds carbide and steel at a molecular level through a precise high-heat, high-pressure solid-state welding process, ensuring jobsite-proven reliability. Bosch is unique in manufacturing its own carbide and performs a quality check on every single bit. The bit’s four-cutter design provides a 180° cutting diameter and ensures power transfer during drilling. An active-centering tip creates rounder holes, while the four 90° side angles form a wide, 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: