MFJ Enterprises Original MFJ-1640T 40 Meter HF Stick Mobile Antenna - 3/8-24<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> 40 Meters Monoband Mobile Antenna </span></li><li><span class="a-list-item"> Note: We do not recommend using with Magnetic Mounts. </span></li><li><span class="a-list-item"> A heavy duty 4 foot， 3/8 inch diameter fiberglass rod， a nearly indestructible .125 inch diameter PH-17-7 stainless steel whip and chrome plated brass fittings will give you years of dependable service. </span></li><li><span class="a-list-item"> Handles 250 Watts PEP. About 7 feet tall fully extended and collapses to 4 feet for easy storage. </span></li><li><span class="a-list-item"> Simply screws into any 3/8 x 24 female mount </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31mHlgCu-1L.jpg" noproxy>