Center-fed 1/2 wave coaxial sleeve. An outstanding, 4' antenna of heavy-duty construction for general purpose communications. It's at home on T-tops, hard-tops and other positions aloft, where its small size can deliver maximum range. Brass and copper elements for maximum range. Stainless steel ferrule with standard 1"-14 thread. Includes 20' RG-8/x cable and PL-259 connector. Max power input 50 watts.