Bosch HC4051 1 In. x 21 In. Spline Speed-X Rotary Hammer Bit</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Tungsten-carbide tip provides superior wear resistance in tough applications</li><li>Active-centering tip for optimum guidance when drilling in concrete and reinforced concrete</li><li>Large flute volume for fast drilling， dust transport and less clogging</li><li>Narrow flute back for reduced friction between bit and material</li><li>Inclined side cutters for aggressive drilling</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/31EEKCCF44L.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/71wVbczONPS.png' noproxy></br>