Vermont American 14376 Concrete Screw Drill Bit， 3/16-Inch by 4-1/2-Inch<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>For installing 3/16-Inch and 1/4-Inch Topcon concrete anchor screws</li><li>Specially designed carbide tip that provides optimum pilot holes</li><li>Special shank tang fits Topcon installation tools</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31zEHycQ0yL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31zlVx9CcNL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51DxkWwPDBL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/21f5yvkpLHL.jpg" noproxy>