Bosch HC4043 7/8 In. x 36 In. Spline Speed-X Rotary Hammer Bit<div style="text-align: left;"><strong>[Product Information]</strong><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></ul></div><img src="http://ecx.images-amazon.com/images/I/31rfEKhN%2BAL.jpg" noproxy>