Shakespeare Extension 1-Feet Mast<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Use extensions to increase the height of any antenna， thus effectively increasing its range</li><li>Extensions also serve to raise antennas to avoid onboard obstructions or sources of signal interference</li><li>White molded polycarbonate male upper and female lower ferrules with 1"-14 threads</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31r9GQz4rTL.jpg" noproxy>