<h3>Product Features</h3><br/><p>Each adapter made of heat-treated hardened Chrome Vanadium (CR-V) Alloy Tool Steel.</p><br/><p>Spring loaded ball bearing on head.</p><br/><p>All socket-drive adapter are 1/4&rdquo; hex shank.</p><br/><p>&nbsp;</p><br/><h4>Blister Packaging&nbsp;Contents</h4><br/><ul><br/><li>1/4, 3/8, 1/2 in. drive adapter, 50mm length</li><br/><li>1/4, 3/8, 1/2 in. drive adapter, 150mm length</li><br/></ul>