<p>Screwdriver bit is suitable for power tools to drive hex head screws.</p><br/><h4>Technical Data</h4><br/><ul><br/> <li>Hex Head Inner Width: 13 mm hex</li><br/> <li>Shank Width: 1/4"</li><br/> <li>Total Size: 48 mm</li><br/> <li>Magnetic: Yes</li><br/> <li>Material: Alloy Steel</li><br/></ul>