uxcell Double Cut Tungsten Carbide Rotary File 5/16-inch Head 6mm Shank Tapered Shaped<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Made of tungsten carbide and suitable for deburring and polishing cast iron， cast steel， carbon steel， alloy steel， stainless steel and other materials up to HRC65 hardness.</li><li>6mm shank and 5/16" head diameter.</li><li>Packaged with a clear plastic case.</li><li>Double cut， tapered shaped head.</li><li>Used for mechanical processing， mold processing， arts and crafts engraving.</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41M9-mIm-CL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41dtuC47dlL.jpg" noproxy>