DEWALT DW5721 1-Inch by 11-Inch by 16-Inch 2 Cutter Spline Shank Rotary Hammer Bit<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>ROCK CARBIDE tip maximizes carbide surface contact for longer bit life.</li><li>U-flute cleans debris out for fast， efficient drilling.</li><li>Open head design channels dust into flutes for quicker drilling.</li><li>Diameter: 1 inch; usable length: 11 inches; overall length: 16 inches</li><li>Includes one 2-cutter spline shank rotary hammer bit</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31ECFDTxDDL.jpg" noproxy>