Bosch Speed-X HC4031 Hammer Drill Bit 3/4 in Dia 13 in OAL Spiral Flute 2-Flute Spline Shank

Bosch Brings constant innovation to concrete and masonry drilling. Bosch developed custom-manufactured carbide and diffusion bonding technology to provide better performance and durability. Speed-X™ delivers high-performance in precision anchoring and drilling applications.