Bosch EX1006 7/16 In. x 6 In. Straight Shank Extension<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>6 In. straight extension shank</li><li>Dimensions 7/16 In. x 6 In.</li><li>Rugged， high-quality materials to withstand tough concrete applications</li><li>Maintains bit integrity at impact point</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31aGl729RML.jpg" noproxy>