<strong>Description?</strong><br>   <ul> <li>4 Pieces <strong>CAT40-ER20-70</strong></li> <li>Gage length: 2.76"(4 pcs)</li> <li>Accuracy in tenth, 0.0001"/0.004mm</li> <li>RPM: <strong>8000r/min</strong></li> <li>Strong and sturdy, stable performance</li> <li>The surface processed by special workmanship, luster and bright</li> </ul>  <br> <strong>Quantity?4pcs</strong>