4-foot Flexible Silver Load Series CB antenna fiberglass whip with Tunable Tip allows for fine tuning SWR resonant frequency. The 200 Watt antenna whip with quarter-inch diameter tapered fiberglass construction has a chromed brass ferrule and standard 0.375 inch x 24 threads (standard). 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.