Toolocity GSB0240G 4-Inch Green Grinding Stone 240 Grit with 5/8-11 Thread<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Size: 4"x2"</li><li>5/8-11 thread to be used with grinders</li><li>Maximum speed 9070 RPM</li><li>Beveled edges on top and bottomedges</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51A-rAIpWWL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/319GUx2VYqL.jpg" noproxy>