Toolocity ABCCD0412P TOC Bloc Dry Diamond Core Bit for Concrete 5/8-11 Thread， 4-1/2-Inch<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>9" tube length， 10" overall length</li><li>7.5mm segment height.</li><li>Laser welded turbo style diamond segments</li><li>Hard bond drilling concrete and masonary blocks， bricks with long life</li><li>Can be used dry or wet</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41WsaNOeaqL.jpg" noproxy>