<h3>Key features</h3><ul> <li>Model: SC6/8/10/12UU</li> <li>Shaft ID: 6/8/10/12mm</li> <li>Inner Diameter: 6/8/10/12mm</li> <li>Main application:working with linear rails.</li> <li>Main parts:Aluminum housing + LM .UU linear ball bearings</li> </ul><p>Free shipping included. 30-day hassle-free returns.</p>