The Centennial antennas bring the best of the high-end features to an economical antenna. Style 5102 is an 8' collinear phased 5/8-wave, 6dB antenna. 5104 is a 4' 3dB antenna. Both include brass and copper elements, chrome-plated brass ferrules with standard 1"-14 thread and smooth, durable high-gloss finish. 15' RG-58 cable and a PL-259 connector.