Wilson 311229 Drive OTR Trucker Antenna - The high-gain Drive OTR Antenna is a high vibration tested omnidirectional trucker antenna that's well suited for off-road conditions. With a separate mast extension and customizable installation options, its height easily adjusts from 7.5" to 40.0" Designed with semi-trucks, fleet vehicles, and overlanders in mind, its all-weather construction successfully passed IPX7 testing and is rated for off-road use. Its spring base helps it resist high winds and low branches and improved antenna cable optimizes overall performance. In the box: Drive OTR Antenna w/13" and 18" mast extensions 3-way antenna mount Spring base, Threadlocker, 16-ft. low-loss antenna cable; featuring SMB-to-SMA Male adapter.