socket adapter set, ptslkhn 3 pcs | 1/4", 3/8", 1/2" impact adapter, 1/4" hex shank, cr-v steel | compatible with power drills & drivers ptslkhn <p>product features:</p> <ul> <li>ncludes 3pc impact socket adapter/extensions</li> <li>1/4-inch(65mm length), 3/8-inch(65mm length), and 1/2-inch(73mm length) drive sizes</li> <li>1/4-inch hex shank</li> <li>heat-treated chrome vanadium steel</li> <li>spring loaded detent ball ensures socket is secured</li> <li>converts power drills into socket drivers</li> <li>best for increased torque projects</li> <li>meets or exceeds ansi/asme</li> </ul>