4' Flexible Silver Load Series CB antenna fiberglass whip with .in Tunable Tip .in allows for fine tuning SWR resonant frequency. The 200 Watt antenna whip with 1/4 .in diameter tapered fiberglass construction has a chromed brass ferrule and standard 3/8 .in x24 threads. In an exclusive dark gray color and 22-gauge silver plated wire to provide higher efficiency the unique ground lead helps to insure reduced static and ignition interference and has a static reducing weather cap.