Bosch HC4042 7/8 In. x 29 In. Spline Speed-X Rotary Hammer Bit

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.

• Tungsten-carbide tip provides superior wear resistance in tough applications
• Active-centering tip for optimum guidance when drilling in concrete and reinforced concrete
• Large flute volume for fast drilling, dust transport and less clogging
• Narrow flute back for reduced friction between bit and material