Astro 2181 Double Cut Carbide Rotary Burr Set with 1/4-Inch Shank<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>8-piece Double Cut Carbide Rotary Burr Set</li><li>Perfect for opening holes， or porting heads on ferrous materials</li><li>Sintered and machined from 100% new raw tungsten carbide</li><li>Unique tooth angle prevents chipping for the longest lasting design possible</li><li>1 year warranty from manufacturer with simple replacement process</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41bmj%2BPPwwL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41GuxabE%2BfL.jpg" noproxy>