3M Cubitron II Depressed Center Grinding Wheel T27 Quick Change， Precision Shaped Ceramic Grain， 13300 RPM， 4-1/2" Diameter x 1/4" Thick， 5/8"-11 Arbor， 36+ Grade (Pack of 1)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>3M Cubitron II grain cuts extra fast and cool and is ideal for weld removal in industrial operations</li><li>3M-engineered triangular shaped grain wears evenly， runs cool， and optimizes mineral breakdown， providing extra long life for wheel and tool</li><li>Specially formulated for use on almost all materials including stainless steel， mild steel， and aerospace alloys</li><li>Quick change attachment enables easy change-outs by hand without tools</li><li>Wheel must have a maximum operating speed greater than or equal to the maximum speed of the power tool used and must be used with a properly sized wheel guard</li></ul></div><img src="http://ecx.images-amazon.com/images/I/61RwDOEik9L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51EJtr0SWyL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41BXYxI1NDL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51Vw7KBq70L.jpg" noproxy>