<p>3-Piece Socket Adapter Set: 1/4", 3/8" and 1/2".</p><br/><h4>Technical Data</h4><br/><ul><br/><li>Drive end: 1/4" hexagon</li><br/><li>Adapters: 1/4" to 1/4", 1/4" to 3/8", 1/4" to 1/2"</li><br/><li>Length: 65 mm (1/4"), 65 mm (3/8"), 72 mm (1/2")</li><br/><li>Material: Chrome-Vanadium Steel Alloy</li><br/></ul>