Proxxon 28304 0 7/8-Inch Silicon Carbide Grinding Wheels， 10-Piece<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Silicon grinding wheels use for stationary or free-hand grinding and sharpening</li><li>Good for use with hard materials such as cast iron， unhardened steels， non-ferrous metals， hard metal alloys， welded joints， rivets and rust</li><li>Good for use with Proxxon's precision rotary tools or other name brand rotary tools</li></ul></div><img src="http://ecx.images-amazon.com/images/I/61KAWqoVsVL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41fBeAsTBOL.jpg" noproxy>