SAIT 20096 Type 27 9-Inch x 1/4-Inch x 5/8-11 6600 Max RPM Grade A24R Long Life Depressed Grinding Wheels， 10-Pack</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Longer life for fewer wheel changes. Ferrous Metals (iron， steel， welds， etc.)</li><li>Virgin aluminum oxide grain assures consistent high stock removal for tough applications.</li><li>All sizes are made with uniform grain throughout no filler grain used in the backing.</li><li>All wheels internally reinforced with the highest quality fiberglass for maximum safety.</li><li>Super-Lock Hub on all 5/8-11 threaded wheels is the safest， vibration-free design.</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/61ABMYJWCAL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/318K87430EL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/313tgWr6KtL.jpg' noproxy></br>