Dremel 971 5/8-Inch Aluminum Oxide Grinding Stone<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Use on metals， castings， rivets， rust</li><li>Use for sharpening， deburring and general purpose grinding</li><li>1/8" shank</li><li>Do not run in excess of 30，000 RPM</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31SBNSKF32L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/81wome1jyqS.png" noproxy>