Reliable Performance: Rated at 250 watts, you can expect years of continuous service. Rugged Construction: The radiating elements are supported internally and constructed of copper alloy. They are then encased in a fiberglass radome for total environmental protection. Weatherproof: The fiberglass radome is ultraviolet inhibited. The mounting sleeve is triple plated chrome brass. It is supplied with a standard powder coated steel L bracket mount. It can also be used in marine applications when it is mated with 1″-14 thread standard marine fitttings. Lightweight: These antennas are lightweight at less than 2 lbs. but are designed to easily withstand winds of over 125 MPH.