Bosch 5/8" x 8" x 13" 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 unique four-cutter design, this drill bit toughness and longevity, providing up to five times the life d to competitors. Manufactured using Bosch's proprietary diffusion-bonding technology, the carbide and steel are fused at a molecular level through a precise high-heat, high-pressure solid-state welding process, ensuring jobsite-proven reliability. Bosch is the only concrete bit manufacturer that produces its own carbide and performs a quality check on every single bit. The bit’s four-cutter design with a 180° cutting diameter ensures power transfer during drilling. Its 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: 5/8" x 8" x 13" SDS-Max SpeedXtreme Rotary Hammer Drill Bit