DEWALT DW5450 Rock 11/16-Inch by 8-Inch Carbide SDS Plus Hammer Bit</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>ROCK CARBIDE tip for longer bit life</li><li>Elongated four flute helix for faster material removal</li><li>Increased steel prevents breakage</li><li>One year warranty， One year service contract， 30 day no-risk trial</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/319p-8Eo%2B8L.jpg' noproxy></br>